It is just a troll.
Troll -> ( from wikipedia )
In
Internet slang, a
troll is someone who posts inflammatory,
[2] extraneous, or off-topic messages in an online community, such as an online discussion forum, chat room, or blog, with the primary intent of provoking readers into an
emotional response
[3] or of otherwise disrupting normal on-topic discussion.
The troller is just provoking readers.
I think it should just be ignored.