Amman , Jordan ( CNN ) -- A large demonstration in downtown Amman on Friday ended peacefully a week after clashes erupted between pro-government and anti-government demonstrators near the Al Husseini Mosque . On Friday , rows of police officers separated pro-government supporters from anti-government protesters . Some in the pro-government march carried a large Jordanian flag and posters of the king . Many in the large group of anti-government protesters , which spanned several blocks , waved Jordanian flags , banners and signs . A small boy held a sign over his head which read , `` No to thugs-Yes to freedom . '' Police said four activists were injured last Friday during clashes , one of which involved demonstrators calling for political reform and a group of men with sticks . Some of the protesters say police failed to protect the demonstrators from what they described as an attack . Lt. General Hussein Majali , the public security directorate chief , said there were 20 officers on site last week when the clashes broke out and the reserves -- who were about five minutes away -- were called in and they changed their tactics accordingly . When asked about police intervention during the second incident , Majali said , `` It could have been faster . '' During the second clash he said , `` the people came running and the police ran also and even worked to separate them . '' Police have tried to maintain a minimum presence during the marches to reduce tensions between police and protesters . Police presence during this week 's demonstration increased significantly . The government has called for an investigation into the attacks . Minister of Justice Hussein Mjalli formed a committee that is now conducting an independent investigation into the attacks . Mjalli said that two suspects have been placed under arrest in connection with the case , and warrants have been issued for the arrest of another 11 suspects . This week 's protest was the latest in a string of protests throughout the country and came as anti-government protests have spread across the Middle East and north Africa . During Friday 's downtown demonstration , at least one pro-government demonstrator , Nedal Dudin , tried to find some common ground between the groups . `` We are here today to prove that we are all Jordanian , '' he said . Meanwhile , the much larger group of anti-government protesters , including a mix of independent activists marching alongside leftists , Baathists , Islamists and youth activists , made it clear the time for change is now . The Popular Unity Party 's youth party chief Fakher Da'as said his group wants to see a new elections law within two months , rather than the three-to-nine-month plan the government has proposed . The Islamic Action Front ( IAF ) , the political arm of the Jordan branch of the Muslim Brotherhood , participated in Friday 's demonstration after steering clear of the downtown marches for two weeks , participating in demonstrations in front of the Egyptian Embassy and organizing other activities instead . Nimer Al-Assaf , deputy secretary general of the IAF , said the group 's decision to join to protesters this week was motivated in part by concern over the attack on demonstrators last week . `` We are here to say to the government we want you to take serious measures against the people who attacked the demonstrators last week . '' Hamza Mansour , secretary general of the IAF echoed those concerns , saying , `` We 're here today to condemn the 'baltaja ' ( acts of thugs ) that we 've seen in the streets of Amman . '' He added that the group also joined Friday 's demonstration to reassert the right of peaceful expression and their demands for reform . He said while the government has started with positive steps , like the progress made on amending the public meetings law , it 's not enough . `` We need them to speed things up , '' Mansour said during Friday 's march . `` We want fast , constitutional reforms that will lead us to a parliamentary government . We want reforms that will make the parliament a true representative of the Jordanian nation . '' Mansour said the IAF and other opposition groups recently sent a letter to Bakhit asking for the new elections law and the political parties law to be addressed within two months . The government , meanwhile , has announced the formation of a national dialogue committee headed by the prime minister and eight ministers that will spend the next three-to-nine months engaging with groups across the political spectrum in order to come up with proposals for revising the two laws . Last Sunday , King Abdullah II told his new government to enact `` real and quick reform '' amid growing protests around the Middle East , promising to root out corruption and give lawmakers a bigger role in government . Khalid Kalaldeh , secretary general of the Left Social Movement remarked , `` Yes , we heard the king 's speech but we have to see that on the ground , the government has to take some actions to apply this speech , until that time we are marching . '' While there was an announcement at the march to return downtown on March 4 to demonstrate , the IAF and the Muslim Brotherhood say they now plan to meet with other opposition party leaders Monday night before announcing final plans for next Friday .
Anti-government protesters want faster political reform . Pro- and anti-government groups clashed last week . This week , police kept the two groups separated . The protest comes as demonstrations spread across the Middle East and Africa .