A Black Lives Matter confrontation pitted neighbor against neighbor — and displayed the raw power of a social media flash mob — Steven “The Worldwalker” Newman found himself in some unnerving situations while circumnavigating the globe on foot as a young vagabond and writer. On a journey that began on April 1, 1983 — because people said he was a fool to do it — and ended on the same day four years later, he saw British troops patrolling the streets of Belfast in armored vehicles, narrowly escaped a robbery by machete-wielding bandits in Thailand, and was arrested and beaten by Turkish police as he made his way toward the Iranian border.