Ah, "double standards"... I see
If a user wants to create a thread for the purpose of sharing mutual dislike of a tech company, that usually flies. If the thread gets out of hand and begins to affect other users in an unwanted manner (again, keeping in mind that users aren't required to read or participate in a given thread), we'll likely step in. Until that point, the thread more or less falls under "forum free speech," as with most other threads that we aren't required to moderate in some form. The prospect of micro-managing discussions is as unappealing for us as it is the general member base. However, when the initial subject of a thread (such as your hypothetical racial/sexual/religious topic) violates the established rules of the forum or has the potential to offend or negatively impact the general member base solely due to its presence (i.e. language used in the title, obvious intent, etc.), that's when the line has been crossed, so to speak.
If you want to get technical, we're here to encourage, catalyze, and protect the type of community development and interaction that the Mobile Nations and Android Central teams are looking to foster. This requires an approach to content and community management different than that of a community with an unspecified or unregulated focus. In part to facilitate more open-ended and less-regulated discussion, we have forums like the Lounge, and, in particular, the Politics subforum. We recently put up a new notice at the top of that forum, mentioning that it "can at times become a heated place where sensitive subjects are often discussed. [...] Constructive discussions, debates and free speech are encouraged in the forums. [...] Discrimination or harassment is not tolerated. Be courteous to other forum members regardless of their race, age, nationality, country of residence, ethnic origin, sex, sexual orientation, political views or religious beliefs." My point being that we don't disallow content that has
any potential to become heated or sensitive, rather we try to accommodate it in the proper locations, when appropriate. Instead of putting those notices in forums intended for conversations about mobile devices and the associated technologies, we practice some degree of content regulation (typically as little as possible) and direct other discussion to those areas as long as it wouldn't be unwanted there either.
Don't mistake inaction for ignorance or confuse content classification with double standards.