Supporters of Brazil's President Dilma Rousseff have set up burning barricades and blocked roads across the country in protest against moves to impeach her. The roadblocks have caused widespread disruption in all Brazilian states. The Senate is due to vote on the impeachment on Wednesday. A simple majority in favour of a full trial will suspend Ms Rousseff for up to 180 days. The government has asked the Supreme Court to suspend the impeachment process for alleged irregularities. However, similar attempts have been rejected by the court.