Mhairi Black: benefit sanctions don't work. And Westminster knows it

https://www.youtube.com/The Guardian270360YouTubehttps://i.ytimg.com/vi/Wf4NhI0wkcc/hqdefault.jpgvideo1.0<iframe width="480" height="270" src="https://www.youtube.com/embed/Wf4NhI0wkcc?feature=oembed" frameborder="0" allowfullscreen></iframe>480https://www.youtube.com/user/TheGuardian480Mhairi Black: benefit sanctions don't work. And Westminster knows it | In my opinion