Over 20,000 Yemeni protesters struck the streets of Sanaa for a "Day of Rage" march on Thursday, demanding clearly to oust their President Ali Abdullah Saleh.

"The people want regime to fall, the people want President Saleh to leave," angry protesters shouted in the largest popular rally outside Sanaa University while thousands of ant-regime tribesmen still flow to join the crowd.

"The people want freedom, the people want to end the dictatorship," protesters chanted in row of lines wearing pinky belts on their heads, symbolized freedom.

Despite the huge number, the 20,000 anti-regime protesters seem to lack enthusiasm after they learnt that the pro-regime were far great in numbers as more than 25,000 supporters approximately filled the downtown and occupied the main square Al-Tahrir.

"Opposition protesters were ordered to not march towards the Al- Tahrir as precautionary measures to avoid any clash with the huge numbers of pro-regime partisans opposition," Faisal Hassan, a protester, told Xinhua.

President Saleh, facing growing demands to leave power, said Wednesday he has frozen the ruling party's controversial amendments, which proposed to allow him to be the country's president for life, adding he postponed next parliamentary elections to meet all the demands of the opposition.

Saleh also called the opposition to cancel the mass protest that has already took place on Thursday.

However, the opposition told Saleh on Wednesday that they will go to the streets to demand more reforms that the people deserve.

Mohammed Abdulmalik al-Mutawakil, the head of the opposition coalition told Xinhua that "he met with the president two days ago and agreed to direct the opposition protest rally to not demand the ousting of Saleh, but thing get out of controls, the protesters clearly demand Saleh's ouster."

"The youths want to change the future of Yemen," he added.