I am not sure about that but they did have the right to restrain him. If one of the employees had died of a heart attack chasing him the perp if he didn't die could be charged with murder. Property right are prety strong here in Texas.
I am big on property rights also.
The way I am reading this the Walmart Employees were negligent once they had the accused in custody and didn't provide any medical assistance and there are plenty of witnesses. This just smacks of big lawsuits.
I wonder if the Police got the videotapes from Walmart, they don't like to give them up.
I'm in Texas, and I'd gladly convict the creeps that killed this guy as he was pleading for his life.