While not a death threat, conspiracy to commit vandalism? While the vandalism may be a misdemeanor, would the conspiracy part up the charges to a felony level? I don't care if the prisons are full, pack them in more! And put panties on their heads!
However, even better. Since they hate the United States so much, give them a choice of which socialist workers paradise they wish to go to. Cuba, Mainland China, or North Korea.
The intent is to threaten and intimidate a public official. I expect it's a hate crime. Just like the klan burning a cross in Rove's lawn, these turds would be the burning crosses of liberalism.