In the last few weeks Adam has been noticing things popping up on his social media timeline tagged with the word “Yookay”, which is supposed to be a reference to how UK is pronounced in a multicultural London accent. The content is a combination of pictures of streets or public transport and sometimes videos. So what's going on? I spoke to Siddharth Venkataramakrishnan, analyst at the thinktank the Institute for Strategic Dialogue, who researches anti-migrant sentiment online.