Here is a good article on the topic addressed to law enforcement officers, but useful for the ordinary citizen.
Under ORANGE below read 'if possible' for 'if necessary.'
Condition White is fine while in your house, assuming your house is well-secured. The minute you step out your door you should move to Condition Yellow, whether you are carrying or not. Train yourself to stay in Yellow as long as you are out and about.
I came close to being mugged in New Orleans' French Quarter in '90 or '91. I was there to read a paper at an A. P. A. meeting. Early one morning I left the hotel to sample the local color and grab some breakfast. Striding along Bourbon street, I noticed a couple of black dudes on the other side of the street. I was wearing a beret, which may have suggested to the loiterers that I was a foreigner and an easy mark. One dude approached and commented on my shoes in an obvious attempt ti distract me and throw me off my guard. My situational awareness saved me. That, my stern mien, height, leather jacket and purposeful stride. I gave the punk a hard look, increased my pace, and blew him off.
Profiling is part of situational awareness. Profiling is just common sense, which is why liberal fools oppose it. A couple of black youths loitering in a touristy area are probably up to no good. If common sense makes me a racist, then we should all be racists, including decent black folk.