A conservative pundit has reignited the debate around the word 'retard' by using it as a slur. Advocates for people with intellectual disabilities are taking the opportunity to renew their call to "end the r-word". Is it insensitive to use the word 'retard' this way, or is it just another sense of the word with a different meaning? Does it do any good to declare certain words off-limits? Linguist Daniel Midgley gets it started on this episode of Talk the Talk.
