A Michigan man is accused of placing pipe bombs outside cellphone stores as part of a crusade to halt telecommunications “containing immoral content,” like porn and cursing, court documents show.

John Douglas Allen, 75 was charged with extortion and attempted destruction of interstate commerce buildings, the feds said in a press release Tuesday.

Allen was allegedly caught on camera placing homemade explosive packages outside an AT&T Store in Sault Ste. Marie, and a Verizon Store in Cheboygan last week, according to officials.

The alleged would-be vigilante then left threatening letters, placed inside polka dot envelopes, at cell towers in the state’s Upper Peninsula, prosecutors said.

The letters, which had a return address of “Coalition for Moral Telecommunication (CMT),” demanded that software be updated to stop the spread of porn and vulgarity, according to an affidavit.

The non-virtuous villain threatened to travel across the country destroying cellphone towers, but he also had his price, according to the allegation.

“Also (within 180 days), you will be given instructions as to how and where you will pay us $5M to cease and desist,” the letter read

Allen faces 40 years in federal prison if convicted.