DaB, I found that listening and validating works wonders in almost any encounter. I've used it with coworkers, people at church, even the cashier at the store! So maybe try to remember to listen and validate. Especially, those in #1. Those in #2 probably won't take shots at you. But if they do, a simple "I understand you feel the need to blame me. However, I am in a hurry and need to go." And then leave. Trying to defend yourself or argue with them or make them see the truth is probably going to be an exercise in futility. So I would just move on.
Keep up the good work!
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018