How long can America stay silent when its ally Bahrain is slaughtering protesters in the street?

[UPDATE: Obama phones the Gulf Kings... Dozens of Bahraini officials have resigned]

This is one of several videos going viral.

WARNING, GRAPHIC:

If that doesn't do it, perhaps this video of a murdered protester will.

NYT's Nicholas Kristof tweets: "This video of a protester killed in Bahrain BY OUR ALLY is almost impossible to watch"

WARNING, EXTREMELY GRAPHIC: