In Iran, at least two demonstrators were reportedly killed during clashes between anti-government protesters and police yesterday. <br/><br/>The current anti-government street protests originally prompted by anger over rising prices and a stagnant economy began in Mashhad on Thursday.<br/><br/>A video posted on social media purported to show two protesters after they were shot dead by riot police in the western town of Dorud when protests turned increasingly violent. <br/><br/>Another video posted to social media also purported to show demonstrators attacking government buildings and participating in violent conflicts with police. Unverified videos posted to social media seemed to show thousands of people protesting in several cities throughout Iran. <br/><br/>Yesterday's demonstrations are the largest and the most serious challenge to Iranian authorities since 2009, following the disputed presidential election of then-President Mahmud Ahmadinejad. They were sparked by a surge in prices of basic food supplies, such as eggs and poultry. <br/><br/>As a counter to the violence, separate state-sponsored rallies took place around the country to mark the end of the unrest that shook the country in 2009. State television reported pro-government rallies were held in about 1,200 cities and towns. <br/><br/>AFP reported that cellphone and internet service were disrupted in Tehran shortly before midnight yesterday. <br/><br/>It also quoted Iran's state news channel IRINN as saying it had been banned from covering the anti-government protests.