Muhammad Ali: Crazed Fans Get Physical for 'The Greatest' Memorial

Muhammad Ali's memorial service is still 2 days away, but thousands of fans are ready and willing to fight for a ticket to get inside.

Ali's memorial is scheduled to go down Friday morning at Louisville's KFC Yum! Center -- but the crowds started lining up Tuesday night and waited until sunrise to make sure they got a seat. 15,000 tix were gone in about an hour!

Even though they were super early birds, some of the fans got out of hand just before sunrise -- pushing and shoving. Security was able to shut it down before anyone was hurt -- and police are now helping with crowd control too. No one was arrested.