We were skeptical about the Green Line and all the hubbub. In a city where politics is not determined by right and wrong, but by who you are with and who you are not, it did not make sense to us that the state would honor its commitments to a city.

After all, in an era of fiscal restraint, why would a Republican administration spend $750 million on Somerville, when there are plenty of cities and towns that actually vote for them?

Add to that the fact that our mayor, for reasons known only to him and his praetorian guard, has gone out of his way to annoy and befuddle Gov. Mitt Romney.

Yet, Monday night we felt the plates shift, and now we believe.

The crowd that showed up at the high school’s Brune Auditorium was a diverse mix of the city’s interests and factions, and testament to Mayor Joseph A. Curtatone’s efforts to unify the city behind the Green Line extension.

When this unified front is combined with the firepower commanded by our man in Washington, Rep. Michael E. Capuano, the city’s push to compel the state to honor its agreements is suddenly in the realm of the possible.

After the meeting, when the MBTA and state officials got in their cars for the long drive to the countryside, imagine the reports they cell phoned to their masters.

Something like: Let’s pick on someone else; we don’t want to tangle with Somerville.

Maurice Bishop, the late great leader of the New Jewel Movement, chanted to his supporters, “A people united will never be defeated!” If we hold on to that ideal, the new F line will be running through Somerville long after this crop of state officials are collecting retirement checks.

Now, just so we understand, nobody is going to cut a deal with the T and settle for a Union Square terminus and screw the rest of the city—right?