Democratic presidential candidates Bernie Sanders and Martin O'Malley were hounded off the stage at an event sponsored by the far left base of the party, Netroots Nation when both men were shouted down by a #black lives matter mob.

Politico:

Both Democratic presidential candidates were supposed to sit down with activist and journalist Jose Antonio Vargas to talk about immigration. Instead, they got shouted down.

O’Malley, the former Maryland governor, was up first, and his forum was hijacked by protesters who said they were from the “Black Lives Matter” movement. They moved toward the stage, chanting, “What side are you on? Black people! What side are you on?”

Two of the activists climbed onto the stage and seized the microphones as O’Malley and Vargas stood by patiently.

“It’s not like we like shutting s**t down but we have to,” activist Patrisse Cullors said. “We are tired of being interrupted.”

But shutting things down is what they did.

O’Malley was repeatedly drowned out by chanting protesters who wanted to discuss police brutality against black Americans. When O’Malley finally did get a chance to respond, they kept shouting.

“I believe every police department in America should have to report in an open and transparent way all police-involved shootings, all discourtesy complaints, all brutality complaints,” O’Malley, a former Baltimore mayor, said. Asked by Vargas about civilian review boards, O’Malley added, “all departments should have civilian review boards.”

That was roughly as specific as the protesters allowed O’Malley to get. He went on to say, awkwardly, “black lives matter, white lives matter, all lives matter,” sparking loud boos.

O’Malley repeated the phrase and the audience kept booing. Vargas tried to quiet the crowd down, but time was up anyway.

“Unfortunately, Senator Sanders is waiting out there,” Vargas said.

“We just started,” O’Malley quipped.

Sanders didn't fare any better. He seemed offended that all of his good intentions about race didn't mean anything to the mob:

Vargas tried to pepper the Vermont senator with immigration questions, but the chants once again threatened to drown them out. At one point, Sanders’ frustration showed. “Black lives of course matter, but I have spent 50 years of my life fighting for civil rights and if you don’t want me to be here that’s OK,” he said.

Once again, time ran out and Vargas said, “Unfortunately we have to wrap it up.”

“OK, good,” Sanders said.

Vargas is the most famous illegal alien in America so it's a shame he never got to ask any immigration questions of the candidates.

After taking a stand by saying "all lives matter," O'Malley realized the error of his ways and apologized:

Appearing on the Internet based “This Week In Blackness,” or TWiB Nation, host L. Joy Williams excoriated O’Malley for his insensitivity for including “white lives” and “all lives” in his statement. The former governor did not repeat the phrases, he referred to them as “those other two phrases.”

"I want to ask something specifically,” Williams said, “Towards the end, in your explanation, you said the phrase ‘all lives matter,’ you said the phrase ‘white lives matter.’ But I want to ask you, do you understand the difference in responding in that conversation, in that context, with ‘all lives matter’ or ‘white lives matter’ when we’re specifically talking about black death, that is not all inclusive.”

O’Malley responded, “I certainly do and, in fact, I believe what I first said was that ‘black lives matter’ before those other two phrases. And when I said those other two phrases I meant no disrespect to the point, which I understand, that black lives matter is making.”

The explanation for why O'Malley can't use "all lives matter" is incoherent. But the candidate obediently groveled on cue.

If this is going to happen frequently on the Democratic side of the race, it will be a very entertaining campaign.