The medical examiner's office says Eric Garner was murdered. To wit: "compression of neck (chokehold), compression of chest and prone positioning during physical restraint by police."
Asthma, heart disease, diabetes, and obesity were contributing factors.
His death has been ruled a homicide, and presumably we're going to be in for a Staten Island trial with Daniel Pantaleo and perhaps other police officers as defendants.
Update October 2014: This is a picture that shows a choke hold. I hadn't seen it before. Garner was not taken down with a choke hold. But this, once he was down, clearly shows a choke hold.