Following a legal challenge by Gina Miller to the use of the Royal Prerogative to invoke article 50, Farage appeared on "The Andrew Marr Show" with Miller. She stated that "politicians had lied all the way through" and that the Referendum act clearly said that the result was advisory. Farage accepted that it was advisory, but said afterwards "I just want to ask her – what part of the word 'leave' don't you understand?". Farage talked of a peaceful protest and warned of unprecedented political anger if Parliament blocked Brexit. Miller said that parliamentary democracy required parliament to debate issues and that Farage had spent the whole Brexit campaign arguing for parliamentary sovereignty. Calling his warnings "the politics of the gutter", Tim Farron said the British judges had merely interpreted British law and that fortunately Farage was the only person talking about taking to the streets. Miller has previously called Farage irresponsible and has blamed him and the tabloid media for death threats against her. She stated in November 2016 that she would not take legal action against those who had threatened her.