Many people foresaw this likely happening and today it begins. Twitter has intervened in the tweets and speech of the President of the United States to review, censor and use their own perspectives to countermand the opinions of President Donald Trump.
By taking this position Twitter has put themselves into the position of arbitrating the opinions of general speech. This is a remarkable shift in the control mechanism of the platform which will likely have ramifications.
However, beyond the intervention, it is worth pointing to the specific issue that has triggered their decision. Note the issue of greatest concern to the command authority of Twitter is specifically mail-in ballots; this is not accidental.



