I just posted this on another conservative discussion site where Trump was getting roasted for his comment:
Looking at some Rob Reiner Twitter posts at
https://web.archive.org/web/20240726003551/https://x.com/robreinerOn May 31, 2020, Reiner claimed Trump was responsible for 105K dead and 40M unemployed due to Covid.
On July 1, 2020 Reiner posted that it was time for Trump to exit the WH and enter prison.
On January 6, 2021, that Trump should be arrested for sedition, treason, and inciting violence.
On April 5, 2020, that Trump is mentally ill.
On May 31, 2020, that Trump can't address the nation about racism or >100K dead of Covid.
On July 5, 2020, that Trump is a symbol of hate.
On June 28, 2020, that people who support Trump are racists because Trump is a racist.
On January 30, 2021, that Trump incited an Insurrection to overthrow the US government.
Moving past a bunch of less crazy railings ...
On July 13, 2020, that Trump is murdering Americans (Covid)
On July 11, 2020, that Trump is a White Supremacist, and that people who support Trump are White Supremacists
On November 17, 2018, that Trump is a F'ing (Reiner spelled it out) moron for calling for raking forest floors (Reiner is too ignorant to know that Trump referred to a very real underbrush management tool).
On August 14, 2020, that Trump is a F'ing criminal.
On July 2, 2020, that Trump is a stone cold racist who is running as a proud White Supremacist.
On June 27, 2020, that Trump committed Treason.
I ran out of patience half way through Reiner's hateful sludge. What Trump posted was entirely inappropriate, but the scores or hundreds of very public hateful Reiner comments calling Trump a murderer, Treasonous, and having attempted to overthrow the US government are the context.