My "be nice" self defense tool is Italian. EAA Witness in 10mm flavor. I have others, but this one seems to follow me around a lot.
That sounds quite calming. Out and about I rely on my Ruger .45 decocker to check uncalled-for disturbances. At home a Mossberg with a big mouth keeps any thought of trouble far from my mind. No matter what happens around here it seems peaceful and serene to me.