It betrays a very honest and straightforward lack of sophistication on the professor's part. He should have called the police anonymously and told them he belie

It betrays a very honest and straightforward lack of sophistication on the professor's part. He should have called the police anonymously and told them he believes there may be a protestor armed with a gun. Then a SWAT team would have cleared the building much more safely, being prepared for the very real possibility one of these people were armed. If you are familiar at all with Baltimore you appreciate how likely this danger actually was.