If you don't have a strong stomach, don't click on the link to the article because the photo of him post-beating is pretty bad.
They thought they were arresting the right guy or outstanding warrants. When they brought him to a cell with no place to sleep, he asked for a mat and they refused. He refused to enter the cell, and they not only beat him - they charged him with damaging property because his blood was on their clothes.
Article
here.