Facebooks getting some company in its fight with the New York district attorneys office over the protection of user data from government investigations, something that has quickly become a battle over constitutional rights. Today, a number of major tech companies including Dropbox, Foursquare, Google, Kickstarter, LinkedIn, Meetup, Microsoft, Pinterest, Twitter, Tumblr, and Yelp, along with the New York Civil Liberties Union and the ACLU, filed amicus briefs in support of Facebook. In a trio of filings today, the groups collectively argue that bulk warrants like the one that required Facebook to hand over user data for 381 users over to the NYDA are problematic, especially when attached to so-called gag orders that keep companies from alerting users that they are under investigation.