>>96266886 (OP)
To entertain this question seriously (but only once):
It is because like most propaganda-based politics these days, it is not about actually sending a message and definitely not about convincing people to take your side. It is purely about hatred and pissing the other side off. (That, or spamming the keywords your side likes without putting in any thought.)
Propaganda isn't real politics, and hasn't been for ages. It's a net that catches the retarded en-masse.