Mario Draghi Attacked At ECB Press Conference: What Happened?

At approximately 8:41 a.m. ET, ECB President Mario Draghi was attacked by a crowd member who accused the central bank of being a "dictatorship." Four minutes later, the conference resumed.

But...what happened?

Everything was going smoothly, according to Twitter:

Then this happened:

Things calmed down after a few minutes, though:

And the ECB kept tweeting: