As a former ER nurse, if he had hit my ER door I would have called the police to report elder abuse with injuries like that...I understand blood thinners, and yes, they probably caused additional bleeding under the skin. But...look at that mouth, he was punched in the mouth, the upper lip has a bruise from part of a fist, the bottom lip smashed against his teeth. Yep, an elderly man like that with injuries consistent with abuse/beating/self defense (hands).