Document everything. There is a story from a few years back of a little old lady in Suffolk county MA that had the police chief stop by to ask if he could put up a campaign sign. She told him no. Less than an hour later a marked police car pulled in the driveway, Three uniformed police got out and put up the sign. They told her to leave it up "If you know what's good for you."
Unfortunately, there was no evidence of this and no witnesses dared to come forward.
If Eomney stooges tried to put oner of Romneys signs in my yard that way, and threatened me like they did that old lady, the sign would have been tossed out on the street before they could exit my driveway...
This is not MASS...