Group formation & the desire to fit in

I was talking with some friends about how each and every
single one of us thinks of relationships in different
ways. But there seems to be some sort of common ground,
we all wanna fit in those inner circles. But after talking about
it for a while, I reached the conclusion that that desire to fit
in, is the root of almost all wrongdoing. 


Have you ever shared some posts for some social issue you had no
knowledge about or changed your profile picture because someone
else told you to do so? Or just changed the answer to a math
problem because everyone had the same answer? Or maybe pretended
to like or dislike a movie or a song because your friends think
so?