Complex sentence: He made an appearance as a killer in the Martin Scorsese film "Mean Streets" alongside his brother David; again with David in "The Long Riders" about the Jesse James Gang, and was in "Massacre at Central High" in 1976.
Split into simpler sentences: He made an appearance as a killer in the Martin Scorsese film "Mean Streets" alongside his brother David. He appeared again with David in "The Long Riders" about the Jesse James Gang, and was in "Massacre at Central High" in 1976.