My issues would be family related...
If...I were single
If...I had all the kids out of the house and secure on their own
If...I had no business contracts/concerns
Living on my retirement, using my skills, and doing my part...
Street Hero Name:
PicassoStreet Hero Look: Skin tight mask and brain bucket mini helmet of white with a random color splatters, a layering of riot gear (which I have

), tan BDU's
Street Hero Gimmick: Non-lethal tools...sticky pepper spray, rubber knuckles, high power air horn, Vaseline*
Vaseline? WTFiretruck right? A soft pack of easy access pouches in the BDU pants cargo pockets filled with thick Vaseline...in a hand to hand fight you can fling a handful with surprising accuracy into the face, eyes, nose, and mouth...when closer you can smear into eyes/mouth/nose which sucks the life and fight out of someone.
I would wear two GoPro cameras...one forward and one aft. To record the most data as possible.
PS
The fun thing is that I have gone on patrol...as a military police member in Cuba...cruising the base, the beaches, the clubs, etc. looking for those military members not behaving up to expected standards.
PSS
Having 35+ yrs or martial training, military training, and anti-terrorism training I have a unique skill set. I also know that anything that could be a true weapon would mean 9-99yrs if the situation went poorly...so I would rely on the non-lethal to reduce the situation and then let the police take it from there.
PSSS
Would I, if I had no ties, pursue a more sniper from afar...poison the pot...trap the gang hideout...etc. to end the existence of the worst of the worst...well my FBI entrance psych eval would point to an answer in the Yes category.