But they have no way to know if its organized by an actual supporter or not.
I strongly disagree. Insiders tend to have a better chance at telling trolls apart from serious members. Sticking to the FE analogy, the
British Flat Earth Association is a good example. It's designed just cleverly enough to get some attention from the media (back when they were active, I had to set a fair few journalists straight to stop taking them at face value), but they're extremely transparent to someone with a little bit of familiarity.
Now, on the off chance that not everyone has followed the trail of links, let me post the posters we're discussing directly here, just so we're all on the same page.
Now, I'm
not an insider of this group, but a few things stand out to me. The most obvious one being the open calls for participants to be armed. The other thing is the try-hard language. My hypothesis is that whoever wrote the red poster hasn't spoken to Trump supporters much and is writing what he's
expect them to want to write. In this attempt, they've massively overdone it.
This has the same energy as the "you can charge your iphone in the microwave!1!!" posters from a few years back. And probably the same source.
If you look at the
discussion surrounding these images (well, once you filter out a whole lot of people REEEEing, at least), you'll notice that they made similar observation. This isn't a case of gatekeeping Trump supporters, it's a case of identifying one of the most obvious trolls of the century. Imagine how much worse it'd be if they didn't try to reduce the impact there.