Russian activists take aim at Putin in march against repression

More than a thousand opposition activists of various stripes marched in central Moscow on Sunday after President Vladimir Putin proposed re-drafting the constitution, unleashing political upheaval.Protesters -- mostly young anti-fascist activists -- chanted "Revolution" and "No to dictatorship" and some carried copies of the constitution.The annual sanctioned march was called to commemorate the memory of lawyer Stanislav Markelov and journalist Anastasia Baburova who were gunned down in Moscow b