Of course. Because they hold to the same supremacist belief system as that of the attackers.
"Egypt: Security forces abandon Coptic Christians during deadly attack in Luxor," from Amnesty International, July 23:
Security forces stood by and failed to intervene during a brutal attack on Coptic Christians in Luxor, Amnesty International said in a briefing published today. During the sectarian violence, security forces left six besieged men –four of whom were then killed and one hospitalized – to the mercy of an angry crowd.
In an attack lasting 18 hours on 5 July, four Coptic Christian men were killed and four others were seriously injured. An angry mob armed with metal bars, knives, tree branches and hammers attacked Christian homes and businesses in Nagah Hassan, 18 km west of Luxor, after the dead body of a Muslim man was discovered near the homes of Christian families. Despite local residents’ and religious leaders’ repeated calls for help, security forces on the scene made only half-hearted attempts to end the violence and sufficient reinforcements failed to arrive.
“It is outrageous that this attack was left to escalate unhindered in this way. Amnesty International has documented a series of cases in the past where Egypt’s security forces used unnecessary force or live fire during demonstrations, yet in this case they held back even though people’s lives were threatened,” said Hassiba Hadj Sahraoui, Deputy Director of Amnesty International’s Middle East and North Africa Programme.
“A thorough, impartial and independent investigation must be conducted into the events in Luxor and the grossly inadequate response of the security forces to the attack.”
The violence began at 3am, shortly after the Muslim man was found dead in the vicinity of Christian homes. His family blamed the death on a local Coptic Christian. By mid-day more than 100 Christian homes had been attacked, with scores of them looted or torched. Local residents reported calling the police and army’s hotlines throughout the day in vain. Local religious leaders also approached other security officials.
“The attack went on for 18 hours, and there was not a door on which I did not knock: police, army, local leaders, the Central Security Forces, the Governorate. Nothing was done,” said Father Barsilious, a local priest from Dab’iya.
In one incident, security forces evacuated women and children trapped inside a house surrounded by an angry mob but left six men behind, apparently following demands from the crowd that the men remain. Four of the abandoned men were later stabbed and/or beaten to death and another required hospital treatment. Three other Christian men were hospitalized in separate violent incidents. One woman said she had begged police officers to save her sons who were left behind, but they ignored her pleas:
“I kissed the police officer’s hands and legs and begged him to protect my two sons and take them out… he completely ignored me and said he would only take women and children…. I buried my two sons in one day,” she said....