In addition to the memes and boycotts against CNN, we need to do more.
First off, we need to write our elected officials at the Federal level and encourage them to apply pressure to relevant law enforcement agencies to investigate this as a crime.
Second, we should contact the FCC and file a complaint at...
https://consumercomplaints.fcc.gov/hc/en-us
According to the FCC's web site, they have regulatory jurisdiction over a variety of matters which include public safety. CNN's threat to dox a private citizen over a meme, especially after calling him a 'racist' among other things, can be considered a threat to the safety of a private citizen.