There are a lot of “liberal” trolls on conservative web sites, and I think that they are there because they imagine themselves as brilliant intellects who can shut down conservatives with a single word of wisdom. Typically, they are mediocre intellects, at best, but they think they are so smart!
Yes you are so correct, and many are here leaving slime trails on the walls on a regular basis to do their best to make our stomachs turn as only liberal slugs know how.
Many of the trolls are, in fact, paid to disrupt. Others are bots, which are programmed to scan forums and post set replies to keywords.
In the 2016 election, many bots posted on forums, to the point that they comprised the majority of posters on some sites. The bots were 60% or more pushing Hillary and the leftist agenda.
I suspect Soros pays for a lot of botting and trolling.