Dozens injured in hours-long clashes . Eyewitnesses accuse police of sparking the attack . People angry about pace of change since Mubarak stepped down . The army deployed hundreds of troops with armored vehicles onto the streets Wednesday to protect the Ministry of the Interior after the police were forced to withdraw from Tahrir Square when anti-government protests raged . The government says it is cracking down on protesters and has arrested more than 1,000 people.
Dozens injured in hours-long clashes . Eyewitnesses accuse police of sparking the attack . People angry about pace of change since Mubarak stepped down . The government says it is cracking down on protesters and has arrested more than 1,000 people.