Some of these groups have materials (signs, pamphlets), rhetoric, and call lists/e-mail lists ready to field people when a suitable event comes along. The narrative is previously prepared and waiting for a suitable event to plug in to that narrative. There is a small cadre of organizers (rally leaders, media person, etc). They have “kits” available on their websites.
Simon Rosenberg 'going after Melania'......he's a 'Proud Globalist' he calls himself...and runs NDN/NPI, a DC think tank... as well as Clinton DNC alumni.....
He writes:
Friends,... Melania tweet is BS cover for raw story to come about "leftists" causing the violence in Charlottesville. Story will become armed, innocent Neo Nazis were just expressing their 1st Amendment rights until attacked by "leftists."
Focusing on "the violence" is not a condemnation of use of New Nazi symbols in public demonstration...Melania's tweet was first cut attempt to create distance from "legitimate" white nationalism/MAGA and overt racism........... Can there be white nationalism/MAGA "without hate in your heart"? ...I think we all know the answer to that Mrs Trump.
veeery rough estimates: 117 feet from impact to stop. He may have been going about 40-45 mph, but that is a very rough guess.