And then there’s the most insidious bias of all: the bias of omission.

The conservative Media Research Center (MRC) recently dove into this issue as it pertains to the border crisis, which has become so bad that DHS Secretary Alejandro Mayorkas recently visited Del Rio, Texas, to talk to leaders there while observing conditions on the ground. Mayorkas still insists the situation is only a “challenge,” kind of like losing weight over the holidays.

In August, as those 208,000 migrants were encountered at the border, broadcast evening news coverage of the crisis totaled just 6 minutes, 28 seconds on all three networks, according to the MRC.

Combined. Over a 31-day period.

On ABC’s “World News Tonight,” the country’s top-rated newscast (averaging close to eight million viewers each night), the story didn’t get one second of coverage. Overall, coverage is down 94 percent from earlier this year despite the numbers only getting worse.