1) Yes, the data was altered.
2) I can't prove a causal relationship between the alteration of the data and a political narrative, but I believe in Occam's razor.
So, I've proven conclusively that NASA altered their temperature data in the 20th century from a cooling trend to a warming trend.
See for yourself.
So this is your new claim. Please write out in clear text that you've moved the goalposts since last time – make it clear what you're claiming now. Then I'll be happy to consider your sources. Just wanna make sure you don't move the goalposts again - as dishonest crackpots tend to.
I'm not asking you to do work for me. I'm asking you to clearly state your claim so that you can't move the goalposts again. The fact that you've done it once, makes me certain you'll do it again and thus invalidate any work I do. State your current claim in clear text, crackpot.
(1) that the data was altered
and
(2) that the data was altered to suit a political narrative.
Only if the answer to both is yes will I even read any of this. I'll wait.
(Why am I being difficult? I believe you're a typical nutcase who sees X happening, and immediately concludes that "X is happening to fit the political narrative")