In the wake of the mass shooting in Orlando Sunday in which nearly 50 people were killed, the National Rifle Association is blaming "political correctness" for the massacre.

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Chris Cox, the executive director of the National Rifle Association Institute for Legislative Action, wrote an op-ed in USA Today Tuesday taking the Obama administration to task for "political correctness" and for not identifying gunman Omar Mateen as a threat.

"The terrorist in Orlando had been investigated multiple times by the FBI," Cox wrote. "He had a government-approved security guard license with a contractor for the Department of Homeland Security. Yet his former co-workers reported violent and racist comments. Unfortunately, the Obama administration's political correctness prevented anything from being done about it."

"Radical Islamic terrorists are not deterred by gun control laws," Cox added. "In the aftermath of this terrorist attack, President Obama and Hillary Clinton renewed calls for more gun control, including a ban on whole categories of semi-automatic firearms. They are desperate to create the illusion that they're doing something to protect us because their policies can't and won't keep us safe."

Presumptive Republican nominee Donald Trump has also called on President Barack Obama to use the term "radical Islam" in his discussion of the attacks:

Is President Obama going to finally mention the words radical Islamic terrorism? If he doesn't he should immediately resign in disgrace! — Donald J. Trump (@realDonaldTrump) June 12, 2016

Meanwhile, Philly.com's Helen Ubinas wrote that she was able to purchase an AR-15 semi-automatic rifle -- the same type of gun Mateen used to kill his victims -- in just seven minutes in Philadelphia the day after the shooting.

"It likely will take more time than that during the forthcoming round of vigils to respectfully read the names of the more than 100 people who were killed or injured," Ubiñas wrote. "It's obscene. Horrifying."

Many on Twitter agreed, condemning Cox for his remarks:



The @NRA's Chris Cox defines insanity in this op-ed, then calls for more guns to prevent violence again. https://t.co/07pb4ClRUX — Kira Lerner (@kira_lerner) June 14, 2016

"Repeating the same thing but expecting a different result is the definition of insanity." - an ironic quote from an NRA op-ed — Mitch Morse (@WittyUsername30) June 14, 2016

The @NRA blames Muslims for mass shootings in USA Today op-ed. Shameless, incorrect, despicable, evil. https://t.co/OHuy0nwbWl — DrunkEnough (@DrunkEnough) June 14, 2016