Major concerns ahead of this weekend Formula 1 Bahrain Grand Prix.
Sky's Stuart Ramsay reports tens of thousands have gathered in the Persian Gulf state, angry at a government crackdown on human rights.
"The pro-democracy demonstrators have promised days of protests over the staging of this year's Bahrain Grand Prix. Formula 1 has given them the perfect opportunity to show their anger over what they see as the unacceptably slow movement towards political reform and quality."
Despite the security concerns surrounding the protests, Bahrain Crown Prince Sheik Bin Hamid Al Khalifa says the event will go ahead.
"Cancelling the race just empowers extremists. I think for those of us who are trying to navigate a way out of this political problem, having the race allows us to build bridges across communities."