How was the Democratic Party converted by its association with the civil rights movement-what political gains and losses did that association entail?

The Democratic Party's association with the civil rights
movement is what has made it into the party that it is today.  It is, in large part, why
the Democratic Party is the party of non-whites today and the Republicans always win the
white (especially the white male) vote.

After the civil
rights movement, the Republican Party adopted their "Southern Strategy."  In this
strategy, the GOP appealed to whites who were turned off by the gains of the black
movement and by the lawlessness of the Vietnam Era.

As the
GOP took these voters away from the Democratic Party, the Democrats had to become more
liberal and more pro-minority.  The GOP turned the opposite
way.

So the Democrats won the liberal and non-white vote,
but they have pretty much lost the conservative and populist white vote for all of my
lifetime up to this point.