Atta is a slur used to describe Arabs in a derogatory way. Taken from the 9/11 terrorist who flew a plane into the World Trade Center, Mohammed Atta
The word Atta is a racial slur that has been used historically to degrade and dehumanize arabs. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to arabs. If you are unsure about whether or not it is appropriate to use the word Atta, it is best to err on the side of caution and avoid using it in any situation.