This is what happened today.
...the two Tweets...were highly likely to encourage and inspire people to replicate the criminal acts that took place at the U.S. Capitol on January 6, 2021.
...Trump’s statement that he will not be attending the Inauguration is being received by a number of his supporters as further confirmation that the election was not legitimate and is seen as him disavowing his previous claim...that there would be an “orderly transition” on January 20th.
...
"The...Tweet “To all of those who have asked, I will not be going to the Inauguration on January 20th.” may also serve as encouragement to those potentially considering violent acts that the Inauguration would be a “safe” target, as he will not be attending.
The mention of his supporters having a “GIANT VOICE long into the future”...is being interpreted as further indication that President Trump does not plan to facilitate an “orderly transition”...
Plans for future armed protests have already begun proliferating on and off-Twitter, including a proposed secondary attack on the US Capitol and state capitol buildings on January 17, 2021.
...our determination is that the two Tweets above are likely to inspire others to replicate the violent acts that took place on January 6, 2021, and that there are multiple indicators that they are being received and understood as encouragement to do so.
