Well the Christians say that they were evacuated from the area (like you have mentioned) by the police for their own safety. The banner was put up in the area (one day ago) by some PMLN guy that the punishment for blasphemy is beheading. With so much tension in the area and assurancse by the police that its for their own safety, people would surely have evacuated. Once they had evacuated, and the government had intelligence that the situation is tense, what did they do to safeguard the area?
The questions we need to ask is that why Christians have been attacked three times (in the same manner) during the past 5 years of Khadim e aala? Not one person has been punished in the Gojra incident. Its not only Christians the way minorities are being treated in the province is in front of us. What can we expect by appeasing murders and terrorists?