'On January 8, 2021, AWS brought concerns to Parler about user content that encouraged violence. Parler addressed them, and then AWS said it was “okay” with Parler.'
'The next day, January 9, 2021, AWS brought more “bad” content to Parler and Parler took down all of that content by the evening'
https://www.scribd.com/document/490405156/Parler-sues-Amazon
"AWS knew its allegations contained in the letter it leaked to the press that Parler was not able to find and remove content that encouraged violence was false—because over the last few days Parler had removed everything AWS had brought to its attention and more. Yet AWS sought to defame Parler nonetheless."
If you are going to run a site full of user content, you really need to read the rules you are agreeing to regarding what content services you depend on such as web hosting allows, and put in place mechanisms to keep your users from posting that kind of content and to find and remove it when it does get through.
https://www.buzzfeednews.com/article/johnpaczkowski/amazon-p...