Richard Roundtree, who starred as detective John Shaft in Gordon Parks’ 1971 action thriller, died Tuesday afternoon after a short battle with pancreatic cancer. He was 81-years-old. Since the announcement, tributes have poured in from Roundtree’s acting colleagues. Gabrielle Union said working with the longtime actor on “Being Mary Jane” was a “dream.” Tia Mowry shared a touching tribute to Roundtree, who worked with her on the Netflix series “Family Reunion.” On Instagram, she wrote, “Richard,