Schwartza is a slur used to describe Blacks in a derogatory way. (sh-var-tza) Stems from the Yiddish word schvartz, or black. It is not derogatory in nature, but usually ends up being used in not the nicest of ways.
The word Schwartza is a racial slur that has been used historically to degrade and dehumanize blacks. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to blacks. If you are unsure about whether or not it is appropriate to use the word Schwartza, it is best to err on the side of caution and avoid using it in any situation.