Are you truly unaware of the meaning of the term "alt-right"?  I suspect not. 

Those who doth protest loudly know exactly what the alt-right stands for, including the white supremacist sub-text. Some cannot face the truth about themselves. So they set up a straw-man to also condemn whites who do not share the racist, white nationalist views of the "alt-right".  

Many whites supported a man for president who openly encouraged xenophobia -  xenophobia aimed specifically at groups who do not generally have white skin. They pretended he wasn't saying what he was saying. Denial. This is NOT about the "progressive movement". It is about truth and morality - with what Jesus taught. Those who support the alt-right reject Jesus' teachings and the gospels. The SBC is finally facing the truth. Alt-right - a "new" name for an old sin - racial hate.

A deep, extended and HONEST examination of conscience may be called for among those who want to deny their own guilt by tarring all whites with it.