Not going to watch the video, as she's apparently another faux militant who told the world Trump wasn't worse than Clinton yet here we are discussing a tax bill designed to fukk the poor, which wouldn't exist if Clinton had won but...
I work in finance/accounting. Basically if you make 70k, are married with a kid (or 3) the bill (which is NOT law and has NOT passed congress yet) will cut your taxes to a degree, assuming you don't live in a state like California or New York with high state taxes. If you are working class and single or have children out of wedlock your taxes don't go up a large amount directly, but by eliminating multiple benefits and healthcare your cost of living will increase enough to be a problem. Especially in states like CA, NY, CT, NJ etc.
It's an interesting study in targeted, regressive policy. Republicans have long argued the poor/barely working class (ie blacks and Hispanics, in their mind) have no skin in the economic game, which is why they're so quick to support democrat policies that increase spending (and thus require an increase in taxes). By effectively raising the taxes of much of the democrat base of support (struggling or working blacks and Hispanics, plus even more whites btw), they're cynically betting that these people suddenly realize high taxes are bad and thus stop supporting policies that could raise taxes. Meanwhile they're cutting enough taxes for many (white) middle and slightly upper class people that they're betting they vote republican enough to protect the bill for the forseeable future.
For black people...a lot of single mothers are going to be fukked. The days of effectively being paid to have children out of wedlock are about to be over..for a time. Medicaid and welfare spending will be easy to reverse when democrats take over again. But the thing you gotta remember is that republicans are SHRINKING government, constantly. They are forcing a spending crisis. You shrink government and lower taxes enough and you'll spark a situation where massive cuts need to be instituted. At which point they get to really gut Medicaid, Medicare, Social Security, etc. The game is simple. They create a fiscal crisis, republicans get wiped out, democrats get elected. Democrat spends 4-8 years fixing the problem....but progress is obviously slow. Republicans sneak into office again and do it again. Eventually you get to a point where you force a crisis.
This is a football game with two bad offenses, where everything is about field position. You get the ball, move it a little, and punt. Eventually the other side gets the ball close enough to the redzone/endzone to score. Democrats scored with Obamacare, which was the biggest wealth redistribution (wealthy to the poor) in 50 years. Now republicans are poised to score with this, reverse much of those Obamacare tax gains while making a huge redistribution back to the wealthy.