Don't feed the trolls.

A troll is a person who stirs up the Internet by starting arguments or upsetting people, by posting inflammatory or off-topic messages in an online community (such as a newsgroup, forum, chat room, or blog) with the deliberate intent of provoking readers into an emotional response or of otherwise disrupting normal on-topic discussion, often for their own amusement. Retaliating against trolls will only make the situation worse.  If you're a victim of a troll, don't write back - simply ignore and report them.

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