Update: U.S. officials confirm
http://hotair.com/archives/2017/05/17/video-erdogans-goons-stomp-protesters-outside-embassy-washington/
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"They think they can engage in the same sort of suppression of protest and free speech that they engage in in Turkey," said one protester. Right, and it's not the first time Erdogan's goon squad has behaved that way. Last year they got frisky with protesters and reporters outside the Brookings Institution, leading the Secret Service to intervene. "This is America!" one agent yelled at one of the thugs. That's the deeper offense here - it's not just the brutality against protesters, it's the affront to American values committed repeatedly, with impunity, by guests. Every one of them should be prosecuted or, if diplomatic immunity makes that impossible, expelled and barred from traveling here again.
But they won't be, because Turkey is an important strategic ally. That needs to change, as much as possible, especially now that the country has transitioned to dictatorship. Until it does, Team Erdogan will crack more heads during their vacations to Washington.
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The essential American soul is hard, isolate, stoic, and a killer. It has never yet melted. ~ D.H. Lawrence