I know this is a hot button topic, but I raced a couple years in the St Louis area, which has local bastions of racism, perhaps like every metro area in the Midwest, or even the US, and while not apparent on the surface, there sure were some red flags, for example:
1. crash occurs during Tue night practice crits, white racer is seriously injured, black racer is accused of riding "too aggressively"
2. junior racer from mixed race marriage is crashed out in Tue night crit, brakes wrist; no longer racing in the area
3. links to personal web page of my dark-skinned wife and child (I am Caucasian) are posted on local bicycle message board in retaliation for my political views; my full name, address, and phone are posted along with physical threats
4. race promoter tells racist joke at beginning of cyclocross race; same promoter is regularly "kidded" about his Jewish heritage
5. race promoter nicknames his January cyclocross series championship race "The All-Celtic Nations Trophy"
6. back in 70's the St Louis Cycling Club refused membership to an African-Am cyclist based on his race; St Louis Cyclones were formed in protest; however, now the Cyclones have zero Af-Am racers
7. out of the hundreds of local racers, there are perhaps two African-Americans who regularly participate in local races, vastly out of proportion to the local African-American population
These may just be isolated facts, and I'm not sure if they add up to "racism", but I just wonder if you have experienced similar things in your region, maybe this is just a St Louis thing. Bill H.