. >>> to san -- zanzabar where the president has been sworn in. >> reporter: the president is sworn in for another five-year term. >> translator: a free and fair election is the only way to get the leaders we deserve in accordance with our laws. >> reporter: but the opposition leaders say his reelection is illegal and a fraud. they say they won the october polls. polling stations in opposition areas were empty. so it was a predictable victory for the ruling party. both the ruling party and main opposition party is strong. ruling party supporters tend to also support the union, which has been in place since independence in the 1960s. but the opposition believe it's their leader who should have been sworn in. past election tensions have lead to violence. but the streets have been calm this time. in 2012, there was violence. these protesters were followers of a religious group. as leaders call for independence from tanzania, and for their interpretation of islamic law to be applied. two churches were burned. its leaders were tried and sent to prison. this man says he is worried some peopl