ACT Christian Democratic Party members have reported acts of intimidation to police after a swathe of the group's anti safe schools campaign signs were torn up, burnt and defaced with threats to kill.
ACT party leader Reverend David Kim said he alerted police to the "radical behaviour" after a torn up sign was left at his Kambah home on Tuesday evening.
"This has crossed a line," he said. "I don't mind people criticising on Facebook, that is the place people can express their opinions, but coming to somebody's house that is not the way."
He felt the torn up signs left by his family's mailbox was a message to stop, or else.
"They know my house and my three children are quite scared at the moment," Rev Kim said.
"It is a message. If I do keep going they may do more actions as they know my address."
Michael Dencio said the two signs he posted a video of burning were taken from a roadside and the post was intended purely to generate debate online.
"I don't condone anything that has happened to Reverend Kim," Mr Dencio said.
Over the past fortnight the Christian political party erected more than 30 'Safe Schools is unsafe for children' signs across the capital and 22 have been destroyed.
Rev Kim said reporting the incident to police was a safeguard for his family, but brought to light the tension in the community about the proposed policy that led people to pen threats such as "All bigots must die" on the signs.
"These things are still under the surface. Police need to know those groups are becoming more violent. I'm quite happy to discuss or debate, but this kind of action should not be accepted anywhere."
ACT Policing confirmed it received a report of property damage of political signs on June 13 and was investigating the complaint.
"It is an offence to damage any property, regardless of its location," the police spokeswoman said.