Trolls

You remember this video I posted here on Monday? It has about 400 views since It went up on Sunday night.  And already 2 comments by trolls.  (Per Wikipedia - a troll is someone who posts controversial, inflammatory, extraneous, or off-topic messages in an online community)  I do not understand the phenomenon that causes people to think it's okay to be insulting to others or to be outrageously inflammatory just because they are anonymous.

Really I am seeking your opinion, should I close the comments on the video, or let the trolls troll.  I am definitely not going to respond, that just encourages them.

<update> I closed comments.  </update>

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