Original sentence: " The damage to the Croatian embassy was less serious.<ref name="yahoo 2/21"> /.A group broke into the The United States embassy, set it on fire, and attempted to throw furniture through the windows.A local clinic admitted 30 injured, half of whom were police; most wounds were minor.Most protesters were non-violent, but some attacked the United States and Croatian embassies.No embassy staff were injured, but a corpse was found; embassy spokesman Rian Harris stated that the embassy believes it to be an attacker.On February 21, there were large demonstrations by Serbs in Belgrade.Police took 45 minutes to arrive at the scene, and the fire was only then put out.The Turkish and British embassies were also attacked, but police were able to prevent damage.The embassy was empty, except for security personnel.The interior of a McDonald's was damaged.US ambassador to the UN Zalmay Khalilzad was "outraged", and said he would request the UN Security Council immediately issue a statement "expressing the council's outrage, condemning the attack, and also reminding the Serb government of its responsibility to protect diplomatic facilities
Edited sentence: On 21 February, massive demonstrations in Belgrade were organized by the Serbian government, with approximately about a million  Serbs coming.The protest was peaceful until they arrived near the US and Croatian embassies, when a small group (200-300 people) separated themselves and started attacking the two embassies, resulting fires in the US embassy and some minor damage to the Croatian embassy.The riots would have continued if the police didn't arrive