Are sports arenas becoming the battleground for civil protests?

A protester at a Cardinals-Brewers Major League Baseball game unfurled a banner that featured a Cardinals’ mascot holding a sign saying, “Racism Lives Here” and “Stop Killing Us.”

The acquittal of former police officer, Jason Stockley, in the shooting death of Anthony Lamar Smith in St. Louis touched off several protests in recent weeks.

Have professional sports arenas become the new battleground for civil protests?

WATCH VIDEO: IN THE DOGHOUSE: Levi Copelin and Josh Gordon

Every week, What's The 411Sports puts a person or organization in the Dog House. This week, Levi Copelin and Josh Gordon get the honors.

NCAA Football is banning Levi Copelin, wide receiver, Missouri, from playing football for the entire 2014-15 season for using banned substances.

Cleveland Browns' wide receiver, Josh Gordon, is facing a suspension after failing a second drug test.