Two days ago, the Free Software Foundation published an announcement strongly condemning Mozilla's partnership with Adobe to implement the controversial W3C Encrypted Media Extensions (EME) API. EME has been strongly criticized by a number of organizations, including the EFF and the FSF's DefectiveByDesign campaign team (“Hollyweb”).
Digital Restrictions Management imposes artificial restrictions on users, telling them what they can and cannot do; it is a system that does not make sense and is harmful to society. Now, just about a week after the International Day Against DRM, Mozilla decides to cave into the pressure in an attempt to stay relevant to modern web users, instead of sticking to their core philosophy about “openness, innovation, and opportunity”.
John Sullivan requested in the [FSF's announcement] that the community contact Mozilla CTO Andreas Gal in opposition of the decision. This is my message to him:
Date: Wed, 14 May 2014 22:57:02 -0400 From: Mike Gerwitz <email@example.com> To: firstname.lastname@example.org Subject: Firefox EMEMozilla has a vast userbase and is in the position to fight for a DRM-free web. Please voice your opinion and hope that they reverse their decision.Andreas,The following day, I submitted the FSF announcement to HackerNews (surprised that it was not there already) in an attempt to bring further coverage to the matter and hopefully spur on some discussion. And discuss they did: it was on the front page for the entire day and, at the time of writing, boasts 261 comments, many of them confused and angry. I sent the HN link to Andreas in a follow-up as well.
I am writing to you as a free software hacker, activist, and user; notably, I have been using Firefox for over ten years. It has been pivotal, as I do not need to tell you, in creating a free (as in freedom), standard, and accessible internet for millions of users. Imagine my bewildered disappointment, then, to learn that Firefox has chosen to cave into the pressure to support Digital Restrictions Management through the implementation of EME.
[...] Mozilla alone cannot change the industry on DRM at this point. In the past Firefox has changed the industry, and we intend to do so again. Today, however, we cannot cause the change we want regarding DRM. The other major browser vendors =E2=80=94 Google, Microsoft and Apple =E2=80= =94 have already implemented the new system. In addition, the old system will be retired shortly. As a result, the new implementation of DRM will soon become the only way browsers can provide access to DRM-controlled content.
She goes on to explain how “video is an important aspect of online life” and that Firefox would be “deeply flawed as a consumer product” if it did not implement Digital Restrictions Management. This is precisely the FUD that the “content owners” she describes, and corporations like Adobe, have been pushing: Mozilla understands that the solution is not to implement DRM, but to fight to encourage content to be published without being DRM-encumbered. Unfortunately, they will now have little motivation to do so, with every major browser endorsing EME.
She defers to a post by Andreas Gal for more implementation details, in which he mentions that the proprietary CDM virus (which will be happily provided by Adobe) will be protected by a sandbox to prevent certain spying activities like fingerprinting. While this is better than nothing, it's a clear attempt by Mozilla to help make a terrible situation a little bit better.
He goes on to say:
There is also a silver lining to the W3C EME specification becoming ubiquitous. With direct support for DRM we are eliminating a major use case of plugins on the Web, and in the near future this should allow us to retire plugins altogether.=20
Let us not try to veil the problem and make things look more rosy than they actually are: this is not a silver lining; it is not appropriate to have a standardized way of manipulating and taking advantage of users.
It is true that Firefox was in an unfortunate position: many users would indeed grow frustrated that they cannot watch their favorite TV shows and movies using Firefox. But Firefox could have served, when the EME API was used, static content that provided a brief explanation and a link for more information on the problem. They could have educated users and encourage an even stronger outcry.
Instead, we are working with the corrupt W3C to implement a seamlessly shackled web. Mozilla wants to propose alternative solutions to DRM/EME, but by implementing it, their position is weakened.
This is a difficult and uncomfortable step for us given our vision of a completely open Web, but it also gives us the opportunity to actually shape the DRM space and be an advocate for our users and their rights in this debate. 
Such advocacy has been done and can continue to be done by Mozilla without the implementation of EME; once implemented, the standard will be virtually solidified—what is the incentive for W3C et. al. to find alternatives to a system that is already "better than" the existing Flash and Silverlight situation?
On behalf of the free software community, I strongly encourage your reconsideration on the matter. Mozilla is valued by the free software community for its attention to freedoms. Stand with us and fight. You're in a powerful position to do so.