Twitter purges hate groups

Twitter began enforcing new rules against violent and hateful groups and content yesterday; early results suggest that the institutional accounts of extremist parties, groups and media are being closed en-masse, but enforcement aganst individuals and mouthpieces is patchy, especially when it comes to American white nationalists and conspiracy theorists.

Twitter announced in October that it planned to take a tougher stance against hate symbols as well as those who posted messages that glorified or condoned violence.It has now said that those who express an affiliation with groups that use or celebrate violence to achieve their aims will be permanently suspended.Hateful imagery - such as the Nazi swastika - can still be posted, but will initially be hidden behind a "sensitive media" warning, that visitors must disable to proceed. However, such content will no longer be allowed on a person's profile page.Those that featured examples will be asked to remove them. Repeat violators will be banned.

The share price is up 10% in the hours since, but it's been soaring anyway and Twitter also announced investor-pleasing features this week. Best not fall into the trap of anointing the market as a validator of good ethics.