Marijuana use=the cause of violence and ignorance of certain world issues?

In order to please Bill O'Reilly and his fans, Jesse Watters went to the Colorado Pot Convention to interview its attendees, which was shown on The O'Reilly Factor. But instead of showing viewers questions being asked that were relevant to this kind of meeting, such as why they were so passionate and grateful about marijuana becoming legal in that state that they're having a whole convention about it, the video there was mostly shown of some attendees not knowing the facts of a couple of world issues. The whole video made it seem as if this ignorance was only due to them being pot-smokers. Furthermore, the shootings near this location seemed to be contributed to the convention being about marijuana use.

As usual, The O'Reilly Factor was being biased in their conservative "values." Marijuana being illegal in all of the U.S. for almost a century, with the exception of Washington and Colorado the past few months, has given it a bad stigma towards those who do not have much experience or knowledge of it. Bill O'Reilly also seemed to confuse correlation with causation in what people smoke compared to what knowledge they have and how violent they are. I personally would reason some attendees not knowing the answers to the world news questions being asked to them being young adults, and as one myself I understand the disinterest in what's happening in the world that doesn't affect me, especially compared to those older. The shootings that were near the convention also could not be contributed to marijuana use necessarily because it was not as if everyone or even most were being violent there.