RT News - May 01, 2014 (12:00 MSK)

Police use tear gas and water cannon against May Day marchers in Istanbul seeking to defy a ban on demos in Taksim square. Protesters respond with Molotov cocktails. A bungled execution in Oklahoma triggers human rights outrage and calls for greater transparency, after a death row inmate dies of a massive heart attack after suffering in drawn out agony. And, a military mystery in Kiev - Ukraine's State guard and police units hold night-time drills in the capital, but the Defence Ministry says it has nothing to do with them.