Mark Brenner & Mischa Gaus, Labor Notes, December 20, 2011 Nurses sang sour carols today to the private equity firm they say is starving Massachusetts hospitals and pitting workers against each other. Massachusetts nurses came to the headquarters of Cerberus Capital in Manhattan because Cerberus is the money behind Steward Health Systems, which took over the troubled Catholic hospital system Caritas last year and now is squeezing patients and workers for ultra-profits. Hundreds of fellow members of National Nurses United, the Massachusetts nurses’ national union, sang and chanted outside Cerberus this afternoon. ... Nurses