No one would begrudge the great director his second Palme d’Or victory for a drama with a noble, emphatic message. But it also illustrates the differences between the Cannes crowd and the wider film audienceFor better and worse I, Daniel Blake is pure, distilled Ken Loach. It’s the story of a 50-something Newcastle carpenter who, after suffering a heart attack, finds himself bundled up in the bureaucracy of applying for state benefits.