Watch 20-year-old Mhairi Black’s amazing maiden speech to the British House of Commons. She is the youngest elected official since the 19th Century.

Black quoted former British politician Tony Benn, who said “that in politics there are weathercocks and signposts. Weathercocks will spin in whatever direction the wind of public opinion may blow them, no matter what principle they have to compromise.

“Then, there are signposts – signposts that stand true, and tall, and principled. They point in a direction and they say ‘this is the way to a better society and it is my job to convince you why’.

“Tony Benn was right when he said the only people worth remembering in politics are signposts.”