Oh I believe it. That video you posted is a good example of how white supremacists gain favor from the general public. They're lead to believe that white people are more victimized than minorities. Take this specific portion of the video for example: "Even though there are far more whites who are killed by the police every year."

First of all, what that chart shows is not "far more" whites than the minorities. It's just about even, or slightly less. But even if you want to only compare it to another specific minority like "Black", the video creator deliberately leaves out two very obvious fallacies that he doesn't want you to think about.

1.) There are far more white people in USA than minorities:


and so with an overwhelming majority, there's little surprise that more white people than any other specific group are being killed. However, the main point is:

2.) The police shootings of minorities that have been sensationalized by the media have generally been about cases where the minorities were murdered by the police (like the police officer who was sentenced to 20 years in prison for shooting a black man in the back and then planting a tazer on him https://www.nytimes.com/2017/12/07/us/michael-slager-sentence-walter-scott.html ), or cases where that is the suspicion.
The reason many of the white police killings aren't sensationalized is because they're not nearly as often executed while unarmed, with their hands on their head, etc.

These videos won't talk about these things. All they want is to scare people into buying into things like this other gem from the same video author:


https://www.youtube.com/watch?v=wSlagnuWSc8

I would like to tell everyone to please don't fall for this nonsense...
Yes, in some cases us white people get the shaft, but we are still far far better off than any minority group. We will be just fine.

But that leads me into my main point here. No, I'm not surprised that Trump won because the average voter isn't very knowledgeable about who or what they vote for, are easily impressionable, especially when the motivation is fear and victimization, and they don't fact check.
Many people who voted for Obama fall into this category as well. They vote for the wrong reasons.
It's easier to win by being dishonest and using fear mongering.

We're not just talking about unarmed people. Because unarmed people can pose a threat as well. If they try to attack the officer, reach for the gun, or hurt someone else, etc.
We're talking about people who for example (on camera) ran away and were shot in the back. A 12 year old child who was holding a toy gun. People who according to forensics were on their knees with their hands on top of their head, etc.
Those were generally the stories that made major headlines, and when the Black Lives Matter movement began.

2 things will work.

1. Do not put him against another supremely flawed candidate like Clinton. 

2. More voters.  We simply need the numbers in the right places. 

As an outsider looking in on your American politics, this video, which is masterfully and powerfully put together mirrors my thoughts near 1 to 1. 

You Can't Believe Trump Won? - YouTube

You need to believe and if you don't want him in office in 2020 and beyond, change your attitude.

Trunmp 2020! Trump life! Trump you the man. 

The left was calling the right racist for being racist.  And that's just as terrible as the right actually being racist?

But they don't call all of the right racists.  Just the ones being racist.

When Trump says or does something racist, that is bad.  So why is supposedly just as bad to call him out on it?

Here is where the problem lies.  When the one person A debases or degrades person B and person B call out person A, person A doesn't get to say his words/actions were not degrading. 

More succinct...person A punches person B.  Person A doesn't get to tell person B how much it hurt.

The issue is that person A (Trump, et al...) is trying to tell person B how much it hurts and then they claim they are being attacked themselves when person B calls them out for punching them.  "They claim I punched them.  See how they are attacking me?"  Trump and many like him are playing the victim for being called out for their actions.  They play the victim and persecutor roles of the Karpman drama triangle of social human interaction.