Your post did not make me laugh because I've seen very similar things like that on secondary market at Sotheby's, it would be thought sort of retro  2000's @ like the Whitney Biennial not that avant garde. Moving on, taking advantage of an art thread, I just saw this at CNN; it's hard to do political art well, and I gotta say: great job!

'Shoot a school kid only $29,' says vandalized Vegas firing range billboard

By Lindsay Benson and Stephanie Becker, CNN, Updated 8:45 PM ET, Thu March 1, 2018

[....] The billboard originally read, "Shoot a .50 caliber only $29." It was an advertisement for a local firing range called Battlefield Vegas, which, according to its website, is a business owned and operated by veterans that features a "military-style complex" a block from the Las Vegas Strip, as well as additional "outdoor training areas."[....]

A guerrilla artists collective called INDECLINE took responsibility for changing the billboard. A spokesperson for the collective said, "It was time for us to address gun reform and to do something louder than an AR-15." [....]