Just how many examples and how far back to you need me to go showing you example after example of the US government deliberately lying, concealing the truth, or

Just how many examples and how far back to you need me to go showing you example after example of the US government deliberately lying, concealing the truth, or delivering intentional disinformation from its citizens on big topics? Did all of a sudden the US government suddenly develop a sense of truth morality in 2021 regarding just this subject? Yeah, call me skeptical.