How come it's only the socialist left-wing tosser's on this forum who are continually telling people to shut up

It isn't. As Paul Simon sang "A man sees what he wants to see, and disregards the rest" Or rather, we often see what we expect to see, whether we like it or not.

Similarly what is "blatently obvious" will differ according to what kind of expectations we are geared up to accept. Very few things in conflict situations are in fact "blatently obvious", if that means obvious to everyone. Very few things in life are really.