Texas Man Arrested After Saving Drowing Victim

I understand that we have to listen to the police and that his refusal to do so may have made the situation worse, but did they have to cuff him, take him to jail, and put on a 20,000 dollar bail? He used poor judgement but he did save the guy.

http://ap.tbo.com/ap/breaking/MGB45X71SAE.html