To be safe you could carry some mortar style fireworks.
On another Po Po scam down mexico way.Watch your pickup bed at gas station and market in Sonoyta. I came out or the store and caught site of a guy toss something in my truckbed (looked like litter) I half ass check it out and find a fired 00 shot gun shell which I tossed away. A friend told me they then find these after a speeding stop and get an extra hundred out of you No one stopped me so it could be B.S. weird though