I have. Up until the recent protests dispatch here was in the open, so you could follow situations in real time. There's no reason that a taser, gun, or handcuffs help with the overwhelming majority of calls, including ones with someone who's panicked and crying.

Where can I find a representative sample of 911 calls?

The calls themselves aren't usually in the open due to privacy concerns, but you can listen to dispatch in many cities here: https://www.broadcastify.com

Exactly, which is why I'm highly skeptical of someone whose political position is justified by supposedly listening to 911 calls.

I listened to the local dispatch until recently when the cops switched to encrypted channels. Fire/EMS is still available though.