Within the Lithuanian Ultra-Orthodox world, you have a group commonly called "Eitznikim" or "Peleg" who tend to hold a stronger anti-Zionist belief than the rest. Usually, when you see photos of the Ultra-Orthodox protesting the draft by sitting and smiling in front of traffic (at best), they are usually a fringe element from this group. Those who are not "Eitznikim" disagree with them, because it goes beyond the standard operating procedure that the State of Israel and the Ultra-Orthodox community has worked out over the past decades: We'll both handle things under the table and keep the peace.
Around a month ago, a secular boy in a secular high school was punished for putting on tefillin on school grounds. He recorded the heated meeting with the principal who simple said, "You did not have permission to do so." So, what did this boy do? He organized a "protest" scheduled for a few days later, which would consist of davening mincha in front of the school and tefillin stands. Hundreds showed up. "Shema Yisroel" was said en masse by who knows how many secular kids. Three hundred pairs of tzitzis were given out. Even the principal came out to put on tefillin (I didn't catch the story behind that). In the end, the school agreed to not only allow people to put on tefillin, but also to allow a tefillin stand on school property for those who want.
I thought it was interesting.
One group, dressed in religious garb, leaves their learning (if they were in the first place), goes out to stir trouble, sorry "defend Torah", knowing full-well, that they are not changing any minds. And what are the fruits of their labor? Well, at best, they diminished Torah in the world, by delaying others in their community from getting to their yeshivos.
The second group, mainly secular, takes out their own time to defend Torah in Eretz Yisroel. They not only do not disturb anybody, but they are actively involved with mitzvos throughout the whole time. And what are the fruits of their labor? Their anti-Torah school becomes nullified, and now allows boys and girls to do mitzvos on campus.
Sometimes, not all the time of course, you can see where the hearts of people are pointing simply by the results of their efforts.
"You shall dress Aharon in the holy garments and you shall anoint him and sanctify him, and he shall serve as priest to me. And his sons you shall bring close and dress them in tunics. You shall anoint them as you anointed their father…" (Shemos 40:13-15).
According to the text above, Moshe is to anoint Aharon, then he is to dress Aharon's sons, and then he is to "anoint them as you anointed their father."
Rav Chaim Flom cites the Meshech Chochmah and asks, why does the Torah need to say "as you anointed their father"? And in turn answers that Moshe and Aharon had no jealousy toward one another. We see clearly throughout the Torah the support each one gave to the other. So, when Moshe anointed Aharon to be the first Kohen Gadol, there was no jealousy. However, the next step was to take Aharon's children and "promote" them to be Kohanim, while Moshe's children were nowhere in the picture. At this point, Hashem was telling Moshe that he should anoint them just as he anointed Aharon, without any jealousy.
My wife once pointed out that she knows of no other society, with the exception of the Jewish world, where the rich and the poor live together within the same community. This makes sense. In the general world, your social status is dependent on your financial status. The more you make, the "better" you are, and naturally, you wish to be around people who are like you.
With the Jews (and I'm speaking mainly within the broader religious world), however, it's not our financial station in life that is our main motivation. When it comes down to it, everybody wishes to be around other Jews who keep Torah and mitzvos. Everybody wishes to send to the best schools and yeshivos, etc. That's what brings us together in the end.
Being that the rich and the poor will live together and send to the same schools and daven in the same shuls, the issue of jealousy is something that can easily come up. Especially for the non-wealthy trying to raise children who are friends with those who are wealthy. "Why can they have this and not us?" My oldest daughter goes to a seminary in Yerushaliyim where, I joke, there are three levels of wealth: The very wealthy, the wealthy, and my daughter. My daughter has made tons of friends, all wonderful girls, none of them snobby or who flaunt any wealth. However, when you see day in and day out people living on a higher financial level than you are, it could easily arouse jealousy.
Another type of jealousy is closer related to the lesson learned by the Meshech Chochmah.
Aharon's children were being given a high spiritual office while Moshe's children were not. It can be very difficult for parents whose children are not so strong, spiritually or in their learning, to see the success of the children of their friends and peers. In fact, there can be the opposite as well: the parents of the successful children can look down at those less successful.
Many times, this stems from the parents' view that their children represent the parents. When the children aren't succeeding, that's a sign that the parents aren't succeeding; and when the children are succeeding, it's because of the parents' great parenting skills.
Anybody who knows anything about Jewish history knows that this is a complete fallacy. There have been, and currently are, plenty of giants in Torah who have raised a mix of a successful and not-so-successful group of children.
The bigger problem with this jealousy, compared to financial jealousy, is that often the child will feel the disappointment from the parents, which will alienate the child even more.
Jealousy is a natural response in life. It's something which comes up all the time and is difficult to control. After all, if Moshe himself was warned about it, all the more so, us. However, it is still controllable.
Half the battle of jealousy can be won, simply by constantly reminding yourself that everybody was put into the world with a specific mission and with specific tools to complete that mission.