Editor's Note: Following a number of attacks against peaceful protestors in Serbia, the Kyiv Independent agreed to not publish the last names of people who gave comments for this story. BELGRADE, Serbia — Thousands of protestors walked 300 kilometers on March 1 from Belgrade to the southern city of Nis to rally support for an anti-corruption protest that took aim at the ruling party. Serbia's Russia-friendly President Aleksandar Vucic has often used a Kremlin playbook to discredit the protests