If you are looking for signs that things have changed since Newtown, here is a big sign:

The private equity firm Cerberus Capital Management said on Tuesday that it would sell its investment in the gunmaker Freedom Group in response to the school shootings last week in Connecticut.

Cerberus acquired Bushmaster — the manufacturer of the rifle used by the gunman in the Newtown attacks that killed 27 people, including 20 schoolchildren — in 2006...

“It is apparent that the Sandy Hook tragedy was a watershed event that has raised the national debate on gun control to an unprecedented level,” Cerberus said in a news release.

Read the whole thing. Perhaps this piece by former New York Attorney General Eliot Spitzer had something to do with the move?

While Cerberus, whose array of holdings is vast, is generally immune to public pressure and the opprobrium of trafficking in products that while legal may be marketed in a loathsome way, Cerberus would not be immune to pressure brought by its own investors... It is time for those of us on the “outside” to find out who those investors are, so that we can prod them to act. Every student at a university should ask the university if it is invested in Cerberus. Every member of a union should ask their pension-fund managers if they are invested. Information is the key first step. From there, action will quickly follow.

Cerberus, the New York Times notes, is "named after the three-headed dog of Greek myth that guarded the gates of Hades."