Cyber troll or twitter Troll cartoon
On-line abuse cartoon
A person who indulges in Twitter bullying and tweeting abusive tweets may be called aTwitter shitter
The cartoon shows a bird similar to the Twitter logo shitting on a person, as a metaphor for social media abuse or internet bullying
An illustration designed as a badge or label to campaign against the use of Twitter for sending malicious tweets.
I’d never heard of the phrase ‘Twitter shitter’ previously, however a quick internet search has thrown up a number of examples, all of which seem, surprisingly, to relate to actually going to the toilet. My own use refers to posting unpleasant tweets similar to the activities of internet trolls and suchlike.