True to some extent, however. the police barriers were taken down hours before the attack, the numbers of police were also shown to be low; and last, but not least, they were not armed to deal with a credible threat.
Reports from SOF at Bataclan, for example, revealed that AK47-equipped terrorists forced the French SWAT teams to withdraw due to lack of firepower, and yet that lesson was not taken seriously to deal with attacks like the one at Nice.