Russian activists are marching in memory of opposition figure Boris Nemtsov, who was murdered in Moscow one year ago today. Let's cross to RT's Nikki Aaron who's at the event.br br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ Listen to us on Soundcloud: br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.