What are "others truths" that must be confronted? how do these "truth" complicate the idea of a melting pot?

The other truths that must be confronted are that New Orleans was America's largest slave market where hundreds of thousands of souls were bought, sold and shipped up the Mississippi River. These souls were tortured, raped and forced into hard labor.

These truths actually complicate the idea of melting pot because despite the fact that New Orleans is a city of many nations, a melting pot, the evils that took place dent the history of the American state.

Explanation:

From the passage, the speaker revealed that despite the fact that New Orleans is a city of many nations, that there is a history that shouldn't be swept under the carpet. He reiterated that there is no point shying away from the gory history that led to the melting pot. He tends to advocate that history will not be complete if they neglected the atrocities that occurred. So, he supports that the truth should be faced.

i really dont know buddy