It’s not always an FA on a power trip sometimes it’s another passenger. Either way one has to stand your ground or get trampled. I always check two bags and sometime three as well as carry a small laptop bag (think medium purse) and a good sized backpack. My backpack is under foot and the laptop bag is always in the overheard. On numerous full flights I’ve had attempts to ‘relocate’ laptop. I have yet to be de-planed but it has been close. You may stand my laptop bag up, slide it from side to side and IF you desire to shift my any further than that it had better be to F with me alongside.