Bad news for Cenk Uygur and a worrying sign for free speech, as the UK has blocked the Young Turks host from entering the country.

• Cenk Uygur was stopped at LAX while trying to fly to the UK for speeches and a Piers Morgan appearance.
• His visa, approved over a year ago, was suddenly rejected with no reason given.
• He links the ban to his criticism of Israel's war in Gaza and the British government.
• The move raises bigger questions about which governments get to decide who can speak where.

Outlook: Expect public pushback and free-speech debate, but the ban looks unlikely to be reversed soon.