Theatre503, LondonPravin Wilkins' commendable debut about the NFL player's public protest is hampered by a lack of pace Colin Kaepernick's decision to start taking the knee during the national anthem playout at NFL games in 2016 shook the world of American football. The birth of his activism gives the backdrop to Pravin Wilkins' Theatre503 international playwriting award-winning play. News of Kaepernick's protest rip…