Sean "Diddy" Combs is standing trial on sex trafficking and racketeering charges in a case that has captured widespread attention.

The government’s star witness wept, telling jurors that the rap mogul’s “freak offs” made her feel “worthless, just like dirt.”

Casandra Ventura, the singer known professionally as Cassie, ended four days of sometimes grueling testimony about being abused by Mr. Combs.