Republicans have been singing to roughly the same tune for over 150 years. Protect individual liberties, promote individual responsibility, enforce laws and punish criminals.
If you read speeches by Lincoln, they sound like Republicans today. The same sorts of ideas were used to abolish slavery, fight segregation laws and pass civil rights laws. All of this was done with people who believed in small governments and free markets and the opposition on the other side always believed using governmental powers to enforce their vision. Democrats earned the black vote in the 1930s by buying up the support of the very people they despised the most with the New Deal. A majority of Democrats voted against civil rights in the 1960s and, save for one Democrat, all those racists died as blue and as bigotted as they were in the heyday of the rampant racism they instituted. Once Democrats figured out they could bundle up voters in minorities by convincing them of their victimhood and pledging to pour taxpayer money in their pockets, they started to look like what they look like today.
Do you know the irony? Courts started to expand the ability of criminals to evade punishment in the 1950s through the 1970s and the Johnson administration launched the federal government on a path to massively expand welfare programs. Expenditures exploded in a matter of 5 years. It sounds like what people have in mind when they think about helping out the poor and fighting crime in black neighborhoods today... The poverty rate did not budge, even if the programs were initially sold as a means to save government expenditures later, and crime rates skyrocketed (no exaggeration). To understand the enormity, you have to understand crime rates were trending downwards for the past 15 or so years, and so were teenage pregnancies, and many positive trends were established prior to the 1960s. Now, fathers are disproportionately more often missing in black communities and single motherhood much more prevalent. It's one of the nice trends that reversed in the 1960s.
Yeah... I'm sure Republicans have been racist since the 1970s. Though you probably forgot that the racist Democrats of the 1960s were still Democrats in the 1970s and that it's not the Republican views on crime, welfare or regulations which prevailed in the 1960s and 1970s. It's also the case that Republicans have always been complaining about those views, that the proponents of those programs predicted exactly the opposite of what happened and that Republicans predicted exactly what happened. Even if you tried to say it's just a coincidence, it's a big pill to swallow, but to put that on the back of Republicans. No. Democrats did this -- racist Democrats, must I add.
I don't think the war on drug was fine. It probably was stupid and still is stupid, but I don't hold the silly view that because a law has a disproportionate impact on black people that it's racist.