Supporters of GOP presidential nominee Donald Trump have been under attack recently in what appears to be a dangerous trend.

WFXT-TV reported that someone has been stealing Trump signs in Walpole, MA, and in a new development, a Vietnam veteran received a threatening letter from the thief.

67-year-old Michael Liotta — a Vietnam veteran and retired 38-year Boston Firefighter — told WFXT-TV that the thief left this insulting, threatening letter — although laughable in its delusion — after stealing the man’s property and in the letter the thief admitted he stole the signs and will continue to do so:

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Watch the local news report about the theft and threatening letter below: