But neither of them claimed these were the official unemployment figures. Both were stating YOUTH unemployment, which I think every sane person knows is a different figure and it's entirely possible for it to vastly differ from the national figure - which includes all the not-yet-retired baby-boomers and all the thirty-somethings and forty-somethings.
The numbers stated by Sanders and Trump also contradict the BLS numbers for youth unemployment by a wide margin.
Losing credibility with the alt-right is really not something I would be concerned about - it should be a badge of honour if a bunch of crazy conspiracy theorists think you aren't credible - because the things they DO find credible are crazy conspiracy theories.
This statement may have been insightful, when alt-right readers were a small, noisy minority. Allow me to remind you that this 'basket of deplorables', or whatever you call them here, just won the presidential election, and right wing nutcases pour into high ranking offices and functions like it's a bath tub drain.
Allow me to also remind you that according to Reuters, which is not exactly an alt-right news outlet, main stream media enjoy credibility with about 30% of US people, and that many people turn to facebook news feeds intentionally and exactly, because they trust shared breitbart news stories more than New York Times or CNN. The MSM narrative of "we are liberal, modern and left wing, therefore we are correct at all times, so we have no need to prove this to right wing imbeciles" no longer works with the general public.
The simple fact is - after actually reading both articles I completely agree with those scores.
Sanders' statement may not have been literally wrong, but it was used in an intentionally misleading way. And Sanders' statement is only correct, when it comes with an explanation such as that offered by politifact, which it didn't come with originally. Stated in isolation it is meant to be interpreted as a number comparable to BLS numbers, which it clearly isn't. In conjunction these two numbers together with politifact's judgment made the fact checking crews vulnerable to dismissal and ridicule by alt-right sites, thereby making them widely ineffective in reaching alt-right minds and hearts when Trump's campaign blurted out gross falsehoods.
The trump campaign gave no indication of where it got the figure - politifact made a sincere effort to see if there was anything that could support it, found something that came sort of close but assessed that the figure really wasn't a valid representation.
Trump's campaign didn't bother with arguing their case with politifact, instead they trashed politifact in their loyal news outlets, and thereby avoided not only the debate about these unemployment numbers, but exposure of all other falsehoods put forward by Trump and his campaign. You may not endorse this strategy, but hell, did it work!