Conversation so far:
When did he start college?
CANNOTANSWER.
Why was he giving a speech there?
entitled "When Diversity Becomes a Problem".
Are there any other interesting aspects about this article?
student protesters demanded that the speech be cancelled, labeling it as "hate speech".
Why was it considered hate speech?
concepts of microaggressions and safe spaces were being used to suppress free speech in the name of diversity of skin color.
What was the response after the speech?
hundreds of student protesters formed human chains to block the doors to the theater where the event was to be held.
How did he get inside?
Shapiro eventually made it into the theater and began his speech, only for a fire alarm to be pulled by one of the protesters.
Did they evacuate the building?
Shapiro continued speaking regardless, calling Covino "cowardly" and referring to the protesters as "spoiled brat snowflakes" and "fascists".
What happened next?
After the speech ended, Shapiro had to be escorted out a secret exit by police and his own bodyguards.

Question: What did the protesters do?
Self-contained rewrite: What did the protesters do?