Nation

Follow PBS NewsHour’s complete coverage of U.S. news, reports and analysis.

Ali was known for his speed and punishing punches -- skills that gave way to his signature catchphrase, “float like a butterfly, sting like a bee” -- as well as his audacious self-promotion.

Friday on the NewsHour, another Donald Trump rally ends with chaotic crowd violence as hostilities between protesters and supporters continue to escalate. Also: Why job growth is at a five-year low, Chicago releases hundreds of police shooting videos, Shields and…