Political parties are constantly changing. The 2016 election was a textbook example of how quickly an American political platform can change. After all, if the incentive of the party is to get officials elected, it needs to change as people change.
While that is fairly straightforward, it also shows how remaining politically loyal to one party is harmful and can lead to you voting for a candidate not in line with your preferences. The best example might be the classic switch of the “Dixiecrats” to the current iteration of the Democrats.
The Democratic Party has had an awful, violent agenda against Black and brown people for over a century. They were the predominant party supporting slavery in the mid-19th century. They also had many members who opposed civil rights and gay rights and supported failed policies like the war on drugs.
Almost any time this editorial board (or any opinion outlet for that matter) writes on partisanship, we receive criticism for “shamelessly shilling for the Democrats and their entire history.” Which essentially is a straw man argument to make — the Democrat party is not the same party as Jackson’s, and the Republican party is not the same party as Lincoln’s.
To say you support the Republican party because they opposed slavery in 1865 ignores their shared role in opposition to civil rights, support for regressive economic policies and the current attempt to strip citizens of their right to vote.