Type 1 Democrats:
Productive working people seeking a fairer shake.
Type 2 Democrats:
Down with whitey crowd. Type 2 Democrats are further delineated into the Type 2B, Type 2H, and Type 2J varieties.
Type 3 Democrats:
Believing college graduates who have not subsequently spent time in either the military or the private sector. The female pictured above is a Type 3 Democrat.
Type 4 Democrats:
Rich guys gaming democracy. Reverend Wright with his multi-million dollar home in a gated white neighborhood, Obama with his multi-million dollar mansion, and the Clintons are the most visible Type 4 Democrats, but essentially all elected officials, Democrats and Republicans alike, are Type 4.
Clarification: By no means are all members of demographic groups Type 2s. I judge that many (most?) Hispanics are Type 1s or Republicans.