Be aware of who is in front of you , behind you, to your sides, etc...
If it’s “yutes” walk around them out of punching range.
If one or more makes a sudden move, then fire away.
Also watch for clenched fists and the “interview” process: “Got a light, know what time it is, got a cigarette? etc...”
Seems crowded sidewalk encounters could become a free fire zone.