This is already not on the news anymore. It seems that the cycle kind of goes like this now.
- Network intentionally misattributes political affiliation of something bad that happened
- opposing network points it out and cries foul
- original network buries the story
- People believe what they were going to believe anyway
yeah, unfortunately the battle lines have been drawn and credibility doesn't seem to factor into how people get their news very much these days. You are probably right.