Initially wanting to wear shoes with messages like "Freedom is a human right" and "All lives are equal," he was informed that this violated International Cricket Council rules on political, religious or racial messages during matches.source https://timesofindia.indiatimes.com/sports/cricket/news/australia-vs-pakistan-1st-test-australias-usman-khawaja-wears-black-armband-in-muted-gaza-protest/articleshow/105978372.cms
