Youtube has become known for the trolls and their comments.
In fact, it's almost expected, anymore.
For no apparent reason, even often on a "good" video post, trolls present their usual comments....almost as though it's expected, anymore.

Although alot of their replies can be offensive, it's best to just receive them as a joke, and if possible, find the humor in how idiotic they really can be.
The trolls presence WILL be there...among the majority of the vid posts, anyway.
It's as though these people have nothing better to do than to surf these vids and post their slander. And just by the immaturity of the responses, it's obvious that the majority of the trolls are merely bored, (some angry) kids with nothing better to do. Try to take it in stride. Overlook the comments.
I go there to watch the vids, not read their comments, (altho reading some of the comments can be entertaining in its own right...lol).

Youtube + Trolls seem to be hand-in-hand, anymore, unfortunate as that is.
Some of their replies are SO out of context and stupid that I have to find the humor in em.

Indie~
While viewing these vids, there is a selection you can choose beneath the vid screen, (somewhere above the comment window, I believe), where you can omit the viewing of the comments entirely.
Hope this helps.....some.

Shangrala