It happened Saturday night near North Orange Avenue after police say Daniel Daley put his hands on the cop.
Witnesses say the 84-year-old was upset when he saw his car was about to be towed.
The Ivanhoe Grocery owner recently posted signs warning drivers because customers of other businesses were parking in their spots.
Several people, who didn't want to go on camera, say it has led to plenty of arguments the past few weeks, but none with the potentially deadly consequences that happened Saturday.
The police were called and say Daley, who'd been drinking, put his hands on the officer.
Witnesses say he put his hands on the officer three times and the cop warned him to stop each time.
Police say Daley made a fist and said ‘I'm not leaving until I knock this cop out.’
But cops are hourly told how special how important how intricate they are to