Over the years, I learned to smother the rage I felt at often being taken for a criminal. Not to do so would surely have led to madness.
I now take precautions to make myself less threatening. I move about with care, particularly late in the evening. I give a wide berth to nervous people on subway platforms during the wee hours, particularly when I have exchanged business clothes for jeans. If I happen to be entering a building behind some people who appear skittish, I may walk by, letting them clear the lobby before I return, so as not to seem to be following them. I have been calm and extremely congenial on those rare occasions when I've been pulled over by the police.
And on late-evening constitutionals, I employ what has proved to be an excellent tension-reducing measure: I whistle melodies from Beethoven and Vivaldi and the more popular classical composers. Even steely New Yorkers hunching toward nighttime destinations seem to relax, and occasionally they even join in the tune. Virtually everybody seems to sense that a mugger wouldn’t be warbling bright, sunny selections from Vivaldi's Four Seasons. It is my equivalent of the cowbell that hikers wear when they know they are in bear country.