I've been a Democrat all my life but but it always seems the Democrats have acted like a bunch of sissies when it comes to attacking Republicans and their positions, especially in presidential elections (the Clintons exempted).
Mondale, Dukakis, Kerry... we cannot take a another loss because the Democratic contender didn't take it to the Republican candidate. The Republicans, on the other hand, have made a high art out of attack and smear, seemingly working on the highest level of mass psychology (it helps when you don't have scruples, obviously).
Here's Paul Begala explaining it better than I (and I don't have the time). Read some of his Huffington Post post below or go here to read the full post.
And remember, Obama, this is politics. It's the moral equivalent of mud wrestling. You can't win if you don't get dirty.
But I have a seven-point plan for uniting the Obama and Clinton wings of the party:
Attack, attack, attack, attack, attack, attack.
Attack.
The way to unite and internally divided organization is to identify an external threat. The Obama delegates will be buying beers for the Clinton delegates once they're focused on how disastrous a third term for Bush-McCain would be. But no one is telling them.
If the Democrats do not spend the remaining days of their convention -- hell, the remaining days of the campaign -- in an all-out assault on the ruinous Bush-McCain policies, they will lose.