Nevermind, the shirt is real that's kinda fucked up. Lost some respect for him.
Didn't lose an ounce of respect for Islam because of that though...
Maybe lose a couple ounces of respect due to the fact the prophet they adore was a murderous pedophile.
I hate to break it to you, but other than being some peoples religious leader, there is absolutely nothing out of the ordinary for his behavior in that time period. It was the status-quo. He was a warlord. Everyone of means, and in fact anyone who could, typically married what we would consider underage girls.
It's fucked up, sure, but I bet you're not criticizing the EXACT same practice Christians had in the exact same era? Moreover, just a little tidbit about which religion was more bloody at that time.
When the Christian forces sacked Jerusalem in the first crusade, they murdered, EVERYONE. Muslims, Jews, Christians. When the Muslims took it back, they only killed the people who fought them. During the entire Crusader period, the standard operating procedure for Christians was to massacre anyone inside a town/village/city they conquered, regardless of religion. The Muslims? Their SOP was to exile the Jews, and allow the Christians to go into exile, convert, or pay a religious tax.
The downward spiral of Islam into regression and conservatism occured the better part of a thousand years later.
There it is, the Crusades folks! It never fails...