Preemptive trolling

The act of writing social media posts to create a screen around the person/thing you are supporting. The post will assert that anyone complaining or questioning your issue is a cooker, idiot, racist, bigot, L/RWNJ, political shill or similar. This is particularly the case when discussing matters of opinion, as opposed to matters of fact.
Examples would be “Those who vote against the upcoming …… are ……. “, or “If you think……., you ARE the problem”.

“That’s some nice preemptive trolling there, not too keen to defend your point then?” “His posts on twitter are just bulls$#t, nothing but preemptive trolling to shut down discussion”