How can you obtain a Mass state troopers are your best protection bumper sticker?

You have to be a member of the State Police Association of Massachusetts (SPAM) or know one. Seeing as you're asking, I'm assuming you are not one and don't know one well enough to invite to Thanksgiving dinner. So, don't put one on your vehicle. It's only going to bite you in the behind when you get pulled over by a trooper.