the best way to 'react' to comments on youtube you don't like nor agree with

at times i get really 'touchy' about this, if i'm on youtube and watching videos i like and see comments posted that i don't like or agree with? or a comment which is 'untrue' and not factual, which causes me to feel angry...at times i'm not sure what i should do? i feel tempted at times to post something aggressive at the poster? but then its me who gets in trouble so i don't do that.

what's the best way to react?