I think not. He was the one to blame, not me. The sidewalks are chaotic and the bikers and skateboarders are causing more problems by not dismounting. Left and right, pedestrians are getting run over by deviants that don't dismount. I have seen many people walking get hit by riders.
Skateboarders run into things and bike riders falling off of bikes, or hit other riders.
Dismount is to take down, disassemble, dismember or simply get off. We all need to get to class. I understand that riding a bike or skateboard gets you along faster. But people need to respect the pedestrians that who are walking in a designated area. I must explain that I also ride a bike occasionally.