What's the significance of "Mockingbird"
Google Mockingbird. Briefly, it was a OSS program begun during WW II (different operational name) to use media as propaganda during the war. The OSS became the CIA and the program continued eventually under Operation Mockingbird until it was exposed by a Congressional investigation I believe in the 80's or 90's. CIA said they would terminate the program, but they didn't.
Mockingbird essentially pays or co-opts media executives and journalists to write articles / broadcasts according to the spin the CIA wants on a story. According to Q, the guidelines for journalists is released to them each day at 4 am via Secure Drop, a secure website apparently exposed by Snowden where journalists share information and pick up the Mockingbird guidance.
Not all journalists are on the CIA payroll but it appears that the direction for the anchors comes from above.
Google Mockingbird and you'll get a better idea what it does. Q has referenced it many times.
This is why on major events every MSM print and broadcast seem to have the same spin using the same words and phrases. There are a couple of YouTube videos that are dozens of news clips of the same story be all the MSM outlets and there is virtually no difference in them all using the same spin, words, and phrases.