what happened to the old, Democrats

I am a history and political fanatic that some of you may know. So was doing some research today about politics of course and ran across some stuff I had totally forgot about. Did you know at one time the Democratic Party was much closer to the Republican mindset that it is now.in 1918 the Overman committee was chaired by Democrat Sen.: Overland the committee was looking for pro-German in America.Democrats even held the majority of seats in the committee of un-American activities, they were a big part of the1940s and 50s Hollywood blacklisting of certain actors and writers who were suspected of communist ties.but here's the sad part somewhere in the late 50s and beyond the Democratic Party lost its way. Now this new Democratic Party seems to me to be embracing what it's founders fought for so long socialism and communism maybe in the future we will see the Democratic Party return to its roots one can only hope