“We examined news coverage from LexisNexis Academic and CNN.com for all terrorist attacks in the United States between 2011 and 2015.” Why did you only examine coverage from those two outlets when there are many more out there. CNN has proven itself to be non creditable after all the lies and fake news they put out. Furthermore why only start at 2011? We had radical left-wing terrorist activity before 2011 like Occupy Wall Street. Then we moved into BLM another radical Left-wing organization and we witnesses all the terror, destruction and violence BLM has done to include calling for the deaths of any police officer. We’ve witnessed the terrorist activities of Antifa, the terrorist threats against whites from the New Black Panthers calling for the deaths of ALL Whites including the “white blue-eyed babies”. I’d say you need to do a lot more research to support your claim but if you only look to CNN and LexisNexis you’re going to fail as you did with this article. Also Trump has been denouncing the KKK, white supremacists and ALL racists hate groups for years; he did not, just now, denounce them after the Charlottesville terrorist incident but that only proves you didn’t do the required research or you would have already known this.