But it isn’t a good point absent the bad assumption that the mentally ill are more dangerous. It only takes one bicyclist that’s fallen off his bike to kill you. So what?

It isn't just the aspect of someone being mentally ill, it's someone being mentally ill and that their behaviour caused the police to be contacted.

like that one time a white woman called the cops on a black man in central park?

I don't think doing an action to have the policed called on you is the best approach, considering it can be weaponized by dishonest actors.

This is a symptom of people being to primed to believe that mentally ill people are dangerous, not a legitimate cause for concern.

Purple call the police on someone yelling. A mentally ill person yelling isn't a danger. They might be in crisis or pain, or they might be unable to effectively communicate.

A gun didn't help in any of those, the vast, vast majority of cases.