The incident for which the men were tried was the single largest known massacre of Iraqi civilians at the hands of private U.S. security contractors. Known as “Baghdad’s bloody Sunday,” operatives from Blackwater gunned down 17 Iraqi civilians at a crowded intersection at Nisour Square on September 16, 2007. The company, founded by secretive right-wing Christian supremacist Erik Prince, pictured above, had deep ties to the Bush Administration and served as a sort of neoconservative Praetorian Guard for a borderless war launched in the immediate aftermath of 9/11.

While Barack Obama pledged to reign in mercenary forces when he was a senator, once he became president he continued to employ a massive shadow army of private contractors. Blackwater — despite numerous scandals, congressional investigations, FBI probes and documented killings of civilians in both Iraq and Afghanistan — remained a central part of the Obama administration’s global war machine throughout his first term in office.

Just as with the systematic torture at Abu Ghraib, it is only the low level foot-soldiers of Blackwater that are being held accountable. Prince and other top Blackwater executives continue to reap profits from the mercenary and private intelligence industries. Prince now has a new company, Frontier Services Group, which he founded with substantial investment from Chinese enterprises and which focuses on opportunities in Africa. Prince recently suggested that his forces at Blackwater could have confronted Ebola and ISIS. “If the administration cannot rally the political nerve or funding to send adequate active duty ground forces to answer the call, let the private sector finish the job,” he wrote.

None of the U.S. officials from the Bush and Obama administrations who unleashed Blackwater and other mercenary forces across the globe are being forced to answer for their role in creating the conditions for the Nisour Square shootings and other deadly incidents involving private contractors. Just as the main architect of the CIA interrogation program, Jose Rodriguez, is on a book tour for his propagandistic love letter to torture, Hard Measures: How Aggressive CIA Actions After 9/11 Saved American Lives, so too is Erik Prince pushing his own revisionist memoir, Civilian Warriors: The Inside Story of Blackwater and the Unsung Heroes of the War on Terror.

Employers, and not the employees themselves, will often be held liable for the conduct of their employees. This is true even if the employer had no intention to cause harm and played no physical role in the harm. To understand why, you have to understand two basic concepts that underlie employer liability.

First, employers are seen as directing the behavior of their employees and accordingly, must share in the good as well as the bad results of that behavior. By the same token that an employer is legally entitled to the rewards of an employee's labor (profit), an employer also has the legal liability if that same behavior results in harm.

Second, when someone is injured or harmed and needs to be compensated, who is the most likely to pay: the employee or the employer? Fair or not, the legal system is interested in making the victim whole, and assigning liability to the employer rather than the employee has the best chance of meeting that goal.