So, racism has, does, and will always I'd imagine, exist. We all are pretty unanimous on that. I think the best point to start here is the Civil War. The war was originally fought to preserve the union, as quoted by Abraham Lincoln. Southern Democrats voted to secede in order to preserve slavery, which was the biggest thing keeping the south's agricultural economy afloat. Abraham Lincoln threatened that by the Republican Party's platform, which is to stop the spread of slavery into new territories (not abolish it completely, at first). The south fires first at Fort Sumter, and the bloodiest war on American soil begins. Fast-forward to the end of the war, the Emancipation Proclamation, a military move, was used to free southern-owned slaves in union-captured southern territories, the 13th amendment is passed to the anguish of the Southern Democrats and Northern sympathizers, and Reconstruction begins. A good thing to note, at this time, only one Republican in office has ever owned a slave in their lives. Ulysses Grant, soon to be president, was the only one, but it's also good to note he was previously a Democrat who had a wife from the deep South who was also a previous slave-owner.
Soon after Lincoln is assassinated, black males are also given the right to vote as free citizens. Black communities then did prosper for a little while because in a lot of communities, blacks were in charge. Andrew Johnson, a Northern Democrat and Southern sympathizer, was in charge of reconstructing the south. Veering from Lincoln's original plans, he accepted money from Southern sympathizers, and turned a blind eye to any laws that were passed to lessen black voting power (grandfather clause, the literacy test, etc.). The KKK was also created under Nathaniel Forrest, to create fear and scare blacks out of voting. White racist Democrats take back control, and the era of Jim Crowe is about to begin.
A big thing people like to bring up to most conservatives being "racist," they like to refer to the southern strategy (the plan Nixon supposedly used to almost win a few states in the deep south, without, funny enough, using any racist rhetoric or promises to appeal to racist whites) and how that started the party "switch." Ironically enough, a switch didn't even begin until the late 1930s when FDR was in office. Why did blacks vote for a Democrat that was still decently racist and had a lot of policy against them? Because they were given a copious amount of welfare through the Great Depression. Their families had support. Going to the 1960s, mainly the time of the civil rights act (another thing people site), despite a Democratic President, Lyndon B. Johnson, in office, 23 southern Democrats voted against the Civil rights act. Republicans were 80% in favor of it, and Johnson caved in. He even said himself "I'll have those n****** voting for us for decades." How many of those Democrats switched to the Republican party afterwards? Only one. Again, where is this massive switch? Jump to 1994, where the consensus is that the South switched to Republican. What happened? Did it take a span of 60 years for racist white democrats to decide the republicans are better for their causes? No, there was a new generation of people that probably didn't even have a grandparent that lived through slavery. Let's look at today now, but before I do, let's put aside the fact that KKK and neo-nazis support the Republican party because no Republican has taken any donations, any lobbying, or really have given any significant support to those groups. That being said, we can consider those irrelevant. You can make the same argument for Antifa for the modern Democrats, so I think it is very fair to ignore the extremes here. Which party is the one that STILL brings up the race card in any of its platforms? I'll leave that one for you to answer, but here's the hint, one of them doesn't give a shit about race at all, period.
If you want to hear more about this, look into who Dinesh D'Souza is. He just made an entire movie about everything I just outlined, and thensome. If you don't feel like paying money to see a movie, he's also talked about this in lectures that can be found on YouTube that are very enticing. Here's
one, he gets to where I talk about at ~36:00