These people are the 60s leftists who were swallowed into the KGBs propaganda swamp, but on how they got to where they are, IMHO, he is right on the money.
This virus was not home grown. It was exported from Moscow.
Put this Evan Sayet speech together with this essay by Arthur Herman: http://www.freerepublic.com/focus/f-news/1805986/posts
and it presents quite a pattern of Leftist efforts to bring down Western Civilization. The French Left surrendered Algeria, then exported the design to John Kerry and the American Left for use on Vietnam, and now the design is used again to pre-emptively surrender to the Islamists.