You can't redefine what's left and what's right. These days if someone is remotely right of Stalin, then you're "alt-right."
Socialism, Comunism, and even *gasp* Nazism, are all leftist ideals. Too many fools start believing the liberal agenda that these things are alt-right ideals. Adolf Hitler was a gun-grabbing, baby killing, racist who believed anyone but pure Germans were inferior. That isn't the right's platform.
The republicans fought against slavery. The republicans fought against abortion (baby killing). The republicans fought for women's rights in the early 1900's. And who was there each and every time to counter? The democrats. Hell, even the KKK was a democrat started faction that was a fight back against the Union during the Civil War.