Republican nominee’s proposal at Pennsylvania campaign rally compared to dystopian horror film The Purge

Donald Trump has been accused of invoking plotlines similar to The Purge – a dystopian horror film in which officially sanctioned murder is occasionally legal – as a possible solution to crime in the US after saying it could be eradicated in “one really violent day”.

In what was seen as an extreme display of demagoguery even by his standards, Trump drew cheers from an audience in Erie, Pennsylvania, with a picture of an out-of-control crime spree that he said could be ended “immediately” with one “real rough, nasty day”, or “one rough hour”.