Their apparent friendship is well known. Trump was never one of them, however. Frankly, he was probably sickened by them, but wasn't in a position to do anything about it… till now.
There's strong evidence Trump is the "wealthy Atlantic City casino investor" they (Mueller's FBI) were using to take down Russian criminals.
Snipers don't actually use red lasers, those are only for movies for dramatic effect. It would be absurd to do so anyway - announcing to your target and his nearby associates that they are targeted is an obviously bad idea.