Description:Amateur video purportedly shows protesters on the streets of Bahrain's capital in the run-up to Sunday's Formula One Grand Prix. The demonstrators are vowing to intensify their protests as race day approaches. They're demanding more democratic rights and the release of at least 60 Shi'ite protest leaders jailed in recent days. The campaigners say the round-up is an attempt to head off any major unrest before the controversial motor race.(2:03)