From experience, your best bet is to go talk to them shortly after they have been robbed at gunpoint or had someone shoot up the place.
Otherwise, you are going up against "I feel ..." which is an undefeatable position. It matters not how much logic you use or how many facts you present, the issue is all about how they "feel".
Picketing them is a losing proposition. Boycotting them may make you feel good but most likely will have no impact on their bottom line.
I know all this sounds defeatist. It may in fact be so. But there are just some windmills that take up too much energy for too little return. Instead, I'd rather concentrate my energies of keeping the .gov straight and restoring some of the rights that have been infringed on for too long.