Are fucking scum! And should be investigated.
There are videos out there that nobody in the right sense of mind would dislike, in fact they deserve likes and yet, there is some piece of shit somewhere out there who will still dislike it.
Those people are a true definition of a piece of shit! They are dangerous for the society, cause who knows what else they do.
Remember that story of a guy whose wife caught him abusing somebody online and leaving vile shit just for the sake of it.