I was standing behind some moronic lady who had a purse with tons of stuff she didn't need to watch a BB game on top of other stuff including stuff in her pockets. Took ten minutes for them to check her. Some other moron tried to take a pocketknife in.
People didn't know the President was going to be there; regular security mostly just cares about smuggling food in to dodge the concession stand prices. I used to carry a pocket knife every day until I lost/forgot it in a backpack pocket (and airport security found it, goodbye little knife). Random stuff always ends up in purses, too; mine is mostly yarn, tools for putting my hair up, and month-old receipts, but other people would have their odds and ends. Doesn't make them morons.