This is from an email message by Robert Reich (emphases in original).
I am endorsing Bernie Sanders for President of the United States.
He's leading a movement to reclaim America for the many, not the few. And such a political mobilization – a "political revolution," as he puts it -- is the only means by which we can get the nation back from the moneyed interests that now control so much of our economy and democracy.
This extraordinary concentration of income, wealth, and political power at the very top imperils all else -- our economy, our democracy, the revival of the American middle class, the prospects for the poor and for people of color, the necessity of slowing and reversing climate change, and a sensible foreign policy not influenced by the “military-industrial complex,” as President Dwight Eisenhower once called it.
It is the fundamental prerequisite: We have little hope of achieving positive change on any front unless the American people are once again in control.
I have the deepest respect and admiration for Hillary Clinton, and if she wins the Democratic primary I’ll work my heart out to help her become president. But I believe Bernie Sanders is the agent of change this nation so desperately needs.
That is exactly my position.
If instead you favor Hillary Clinton, you could rewrite this letter. If you do, I hope you would include the last paragraph quoted above. At the end of the day, regardless of who we Democrats prefer in the primaries, we need to come together to help elect a Democratic president in 2016. If we do not, we get a demagogue who would be happy to punch out protesters.