The different between criticism, trolling, and hate

It seems like a lot of people on this forum do not know how to properly write criticism without hating, for example, if I'm criticizing an idols vocals on one performance , I'm not gonna sneak in a little "this is why so and so is lazy and cannot sing properly" that's not criticism that's you spreading hate. Now trolling is sometimes funny, but when you start making threads calling groups un talented, ugly, or whatever, Its just weird. Like weird in a sense that you seriously just want people to click your thread and comment some bull. Then get mad that people are trolling you back in the comments. #trollsstartbeingfunny #getajobchallenge