But I think it 's fair to say , number one , any of us would be pretty angry ; number two , that the Cambridge police acted stupidly in arresting Arrest somebody when there was already proof Protest that they were in their own home , and , number three , what I think we know Know separate and apart from this incident is that there 's a long history in this country of African Americans and Latinos being stopped Preventing_or_letting by law enforcement disproportionately . ''