This message was sent by me today to Mozilla's CTO in response to the 
recent announcement of Mozilla's strategy to implement DRM technologies in their popular Firefox web browser. Please read below my opinions on that topic and consider writting to 
Andreas Gal with your opinions as well. You can read more about the issue at the 
FSF website.
 
Andreas Gal, (Chief Technology Officer and Vice President of Engineering at Mozilla)
When copyright law is concerned, we must 
remember that there must be a balance between the rights of copyright 
owners and the benefits to society at large.
There are
 certain uses of a copyrighted work that its copyright holders are 
allowed to inhibit society from doing based on their interests. That's 
OK. There are other uses, though, that society can enjoy without the 
need for explicit authorization from the copyright holder. That's for a 
reason: Copyright law is not absolute. There are necessarily limits to 
its scope and thus there are limits to copyright holders power.
DRM
 mechanisms are algorithmic implementations of the copyright holders 
intentions. Given that the copyright holders tipically do not want 
society at large to enjoy the work in any way that is different from 
what is encoded into the implemented DRM algorithms of their choice, 
then it is clear that such restrictions can only be enforced effectively
 by implementing DRM as proprietary software, so that the users have no 
way of getting rid of the imposed restrictions. Such restrictions apply 
forcefully even when not supported by the law.  Actually, the trend to 
use criptography to strengthen such restrictions
 demonstrate how hard copyright holders are willing to impose powers 
they do not fully possess according to copyright law. As said before, 
copyright law (and the power it gives to copyright holders) is not 
abolute. Even when society needs to benefit from a copyrighted work in a
 way that would be considered perfectly legal according to the copyright
 scope limitations prescribed in law, DRM still inflexibly blocks such 
legitimate attempts of enjoying the work.
As pointed 
out by Lawrence Lessig: "Code is Law". For this reason, we must reject 
DRM technologies, as it disrespects the rights of the computer users. 
That is... DRM-encumbered works sistematically disrespect the rights of 
society at large to legally enjoy such works in ways prescribed by 
copyright law.
Please. For the sake of respect for the users of Mozilla products, please reconsider Mozilla's stance on this matter.
Felipe Sanches
software freedom activist & developer
São Paulo, Brazil