[5] In April 2016, Green was standing under a bridge, kitty corner from a bus stop, when he was questioned for one minute by Constable Andrew Pfeifer of the Hamilton Police Service, who was in his car.
[9] Green, a vocal anti-carding advocate, filed a complaint with the Hamilton Police Service, saying he was clearly just on his phone and waiting for a bus, and that he felt racially profiled and "psychologically detained" by Pfeifer's questioning.
"[9][12] Green said that the example set by Lincoln Alexander, the first Black Canadian MP and a former Hamilton politician, helped inspire him to get into politics.
[17] In March 2022, NDP leader Jagmeet Singh nominated Green to serve on the Special Joint Committee on the Declaration of Emergency which had the mission to investigate the Freedom Convoy.
[33] Green said that he was against antisemitism, as well as "the rise of Islamophobia and anti-Palestinian hate," and condemned Holocaust denialism and "incitement of hatred towards any group including the Jewish community.
"[31] In January 2024, Green was one of five Canadian MPs (two other NDP, and two Liberal) to travel to the West Bank and Jordan to meet with Palestinian refugees and aligned progressive Israeli groups.
[36][35] Green shared video footage on his Instagram account of the Jenin Refugee Camp, calling attention to decimated infrastructure and an expanding graveyard.
[37] The trip followed Canada's vote in favour for a humanitarian ceasefire between Israel and Hamas at the United Nations General Assembly on December 12, 2023 (UNGA Resolution ES-10/22).
[39] Green has also criticized what he called the federal government's slow reaction to protect Canadians amidst the cost-of-living crisis.