Why ya'll not talking about the video? It's the most important clue. Notice how it's completely muted except for the gunshots? You can't hear anything else at all, not even Ahmuad scream after getting shot? If you read the public police reports on the incident, you'll know why.

Read the police report, you'll know why the audio was muted. Police were on the way as they were already called (he even saw the guy on the phone calling them, that's when he took off "jogging"), they shouted for him to "stop and talk" repeatedly, BEFORE he could even see they were armed, and the BEST part is, Ahmuad was on parole for gun crimes on school grounds, violated parole by stealing TVs, and he KNEW the police were on the way and he didn't want to go to prison for years for those parole violations.

Ever hear someone say "I'm not going to prison, you aren't taking me alive"? Yep, that was Ahmuad after getting caught.