The EFF suggests to use the hashthag #privacyisaright . With that, I would go for this modification of the first tweet:

Wikimedia legal counsels on why full transparency is important in the age of mass surveillance: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/ #privacyisaright

On Wed, Sep 17, 2014 at 2:49 PM, Carlos Monterrey cmonterrey@wikimedia.org wrote:

Hi all,

Here is the proposed SM for today's cross-posted blog in conjunction with EFF regarding WMF and transparency. Thanks for reviewing:

Blog post: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

SM calendar: https://meta.wikimedia.org/wiki/Social_media/Calendar#September_17

Wikipedia Is Built on Transparency

t: Two legal counsels for the WMF chime in on why full transparency is important in the age of mass surveillance: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

t: See how the Wikimedia Foundation hopes to use full transparency as a way to counteract mass surveillance: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

t: Bringing attention to the Necessary & Proportionate Principles, WMF outlines its mission for full transparency: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

t: For Week of Action put on by @EFF, WMF outlines its core values to uphold full transparency in today's digital age: http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

f/g: "The mission of the Wikimedia Foundation is to empower people around the world to develop freely licensed educational content and to globally disseminate that content." As part of Week of Action: A World Without Mass Surveillance put on by the @Electronic Frontier Foundation, two legal counsels from the Wikimedia Foundation outline how transparency is at the core of the Foundation's mission. http://blog.wikimedia.org/2014/09/17/wikipedia-is-built-on-transparency/

I would modify as follows:

"The mission of the Wikimedia Foundation is to empower people around the world to develop freely licensed educational content and to globally disseminate that content." As part of week of action for a world without mass surveillance held by the @Electronic Frontier Foundation, two legal counsels from the Wikimedia Foundation outline how transparency is at the core of this mission.