Google expanded its "sensitive category blocking" to more languages (1,2), now publishers in Thai, Turkish, and Russian-speaking countries can now block ads in sensitive categories for all supported languages.
With sensitive category blocking, "you can prevent ads from up to 11 specific categories from appearing on your pages. Ads in these categories will be blocked if they're in any of the supported languages, regardless of how they've been targeted to your pages."
To set up sensitive category blocking, use new AdSense interface, which you can access by clicking "Try the new AdSense interface" link in upper right corner of your account. Once in, visit Allow and block ads tab and choose Settings page to edit the list of sensitive ad categories you wish you display. To help you understand the impact of applying these filters, this page also shows you the %tage of revenue and ad impressions you've been receiving from each category in the last 30 days.
If you prefer to use older interface, visit Ad Review Center, located under 'AdSense Setup' tab. Once you click 'change', you'll be able to see the full list of categories you can block.