>>2840241>>2840257>>2841097 (this too…)It all depends on the look. Not using a DLSR is a good start, but having something that looks small and a bit fucked (a film camera could actually work here).
Sticky tape on the outside of the camera/lens (like you've shoddily repaired it) it great for 'devaluing' equipment.
Engaging people (talk to shopkeepers, panhandlers, etc) it generally good for street photos.
Focus on inanimate stuff 90% of the time, then occasionally snap people walking past or in the background. Obviously 'dat creeper look' is what you're (we're) trying to avoid.
If the area isn't too criminal (eg. poorish places in Asia), I've personally found you can get away with a lot by looking 'artsy' and photographing arches/walls (people just start to ignore you).
[Spot - sound of two eyes opening]