Media Matters resisting effort by staff to form union

To say that Media Matters vocally supports unions and union causes would be a bit of an understatement.  

Media Matters for America is apparently resisting an effort by Service Employees International Union Local 500 to unionize its staff. 

Last week, the union filed a representation petition with the National Labor Relations Board, indicating that the nonprofit media watchdog organization rejected an effort by the union to organize MMFA's staff through a Card Check election. . . . .

For some reason I suspect that if a conservative organization rejected such an effort at unionization, it would be something that they would put up more than a few scathing posts on.