Environment Secretary Owen Paterson has told ITV, 'I'm completely unmoved by the protest. I've lived in the countryside all my life...
"...there are people shooting furry animals tonight. There are people lamping foxes, lamping rabbits."
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The talks descended into crisis on Friday when Canada's trade minister Chrystia Freeland walked out of meetings.
Police in New York are still investigating what the substance is and whether it could be harmful.
The Sherlock actor made the comment while he received an award for his humanitarian work.