It seems odd that the primary victim of this apparently random "I'm going to find some Republican Congressmen and shoot them" attack was Steve Scalise, one of the most powerful and divisive Republicans in Congress.
How is Steve Scalise divisive?
The "David Duke without the baggage" comment was unfortunate, but it's taken out of context to imply that he shares David Duke's white separatist views but doesn't have the KKK baggage. He meant that he shares much of David Duke's policy agenda (not ideology) from his 90s campaigns, which have become mainstream in the GOP post-Duke.