Europe In Moscow, a protest march becomes a wake for slain opposition politician

Boris Nemtsov was shot dead Friday night in central Moscow. His death has alarmed many in Moscow, who are skeptical of President Putin's promise to find the killers.

Sergei Karpukhin

A planned anti-Kremlin protest became a grim march of mourning Sunday, as tens of thousands of people filed past the flower-strewn spot next to Red Square where liberal activist Boris Nemtsov was murdered, gangland-style, late Friday night.