PARIS (AP) — You can’t put a guard in every church and patrol every beach. But after a wave of attacks in Western Europe, authorities are struggling to protect their people as best they can. The French Riviera city of Cannes has banned large backpacks on beaches lest they hide explosives, and Britain is providing extra funding for security at tens of thousands of places of worship. The grisly slaying this week of an elderly priest celebrating Mass in a Normandy church, less than two weeks after 84 revelers were mowed down by a truck on a beachfront promenade in Nice, sounded the alarm that nothing is sacred and no place is safe. Four attacks in a week in Germany sealed that conviction. “Churches take great pride in being open. But there comes a time when the reality of crime and the reality of terrorism may mean that some of that balance needs to be readjusted,” said Mark Gardner, spokesman for Community Security Trust which provides extensive protection to Jewish synagogues and schools throughout Britain. The Trust started operating in 1994 after a car bomb attack on the Israeli Embassy in London injured roughly 20 people and a devastating attack