Environmentalist Isidro Baldenegro López, an anti-logging activist in Mexico, was shot dead this month at a relative’s home. We discuss how social, political and economic circumstances are changing environmental activism with Global Witness’ Ben Leather. In our series ‘Canadians on Americans,’ we examine what events and trends say about America and Americans. Today, we speak with ethicist and philosopher, David Goa. Plus, a campaigner for economic and consumer rights for women in Saudi Arabia.