David Sirota — who joined the presidential campaign of Independent Vermont Sen. Bernie Sanders this week as a top communications aide and speechwriter — once wrote an opinion piece that was headlined “Let’s hope the Boston Marathon Bomber is a white American.”

Sirota wrote the article for the liberal outlet Salon in April 2013 in the wake of a terrorist attack at the annual Boston marathon race, and flatly stated that “white male privilege” was a heavy factor in whomever got blamed for the killing.

A jury sentenced Boston Marathon Bomber Dzhokhar Tsarnaev to death in May 2015. Three people died in the attack and hundreds more were injured. Tsarnaev, a Muslim, said the attack was politically motivated.

Sirota’s desire for it to be otherwise is just the latest skeleton to emerge from the writer’s literary closet this week, as he joins Sanders’ in “properly explaining” Democratic Socialism to Americans. (RELATED: Bernie Sanders’ New Speechwriter Lauded The ‘Economic Miracle’ Of Venezuelan Socialism)

The author and speechwriter contended:

The dynamics of privilege will undoubtedly influence the nation’s collective reaction to the attacks … This has been most obvious in the context of recent mass shootings. In those awful episodes, a religious or ethnic minority group lacking such privilege would likely be collectively slandered and/or targeted with surveillance or profiling (or worse) if some of its individuals comprised most of the mass shooters. However, white male privilege means white men are not collectively denigrated/targeted for those shootings — even though most come at the hands of white dudes.

Sirota quickly transitioned from an abstract conception of “white privilege” to the “undeniable and pervasive double standards” in American society that “will almost certainly dictate what kind of governmental, political and societal response we see in the coming weeks.” (RELATED: Mark Steyn: Beto O’Rourke ‘A Parody Of Rich White Privilege)

His ultimate point is that America is supposedly so white and so racist that “if the bomber ends up being a white anti-government extremist, white privilege will likely mean the attack is portrayed as just an isolated incident.”

But if the bomber was not white, Sirota predicted a significant backlash.

“It will probably be much different if the bomber ends up being a Muslim and/or a foreigner from the developing world. As we know from our own history, when those kind of individuals break laws in such a high-profile way.”