Part 1. Definition
In this task, you are given a public comment from online platforms. You are expected to classify the comment into two classes: identity-attack and non-identity-attack. Identity attack refers to anything rude or disrespectful about someone's identity, including appearance, race, gender, and sexual orientation.
Part 2. Example
Comment: It's bad enough we already have all these American sicko's living in this country shooting up theatre, schools, churches, malls, etc., we don't have room for crazy muslims.
Answer: Identity-attack
Explanation: This comment contains identity attacks on both American and Muslim.
Part 3. Exercise
Comment: LOL. Never thought of it like that. First time he turned up to shriek and flail was--IIRC--to comment on my 2015 Nat'l Feral Cat Day editorial. At least two of the other cat-nutter commentators in here posted last year as well. Heh--and they call US 'trolls'.

The embarrassing thing about Roy is that last year anti-TNR commentators (from elsewhere and who didn't know him) thought he was a teenager because of the frantic idiocy and immaturity of his posts. One of the 'lurkers' in here whom I know is on our side probably remembers too, because he made lengthy, patient efforts to reason with him, and Roy acted like a baboon and hurled heaps of childish crap at him in return.

I'll give him credit for putting a little more effort into the debate than he did last year, but now he seems to simply have degenerated into tantrums and name-calling. What seems to work (although it's taking a little longer this time) is to ridicule him until he gets sufficiently butt-hurt and leaves...
Answer:
Non-identity-attack