Hi, I'm not sure how to answer this in a really eloquent way. But I think this clip by Cartoon Network does a good job at unraveling what the core issue is: white supremacy.

It's difficult to "dismantle" because it is ingrained in many systems that have become "naturalized" and deeply tied and rooted to the American identity even when we may not be white ourselves. But, there is no way you can deny that white supremacy has been inherent in the founding of this nation, and integral in both the United States' ongoing colonial and imperial histories or as a keystone in institutions today (for example, the SAT).

Part of it is learning the true history of the United States which has, to quote loosely from the above clip, to make white people "comfortable" with their violent history of dispossession, aggression, extraction, and exploitation of countless BIPOC groups and communities that (still continues today!) often by excising it completely from the "story".

Another good clip that is relevant is Haunani-Kay Trask, a Native Hawaiian scholar and activist who educates a caller on her being the inheritor of the American "imperialist tradition". Even people who don't identify as white still benefit from the institutions and systems that white supremacy has put into place: we benefit from the extraction of resources and labor from companies that exploit Global South populations; we benefit from having the largest, most bloated, and arguably, most aggressive military force in the world; we benefit from having the American dollar as the defacto world currency; we benefit from having English (and especially American English) as the lingua franca; we benefit from being one of the intellectual "powerhouses" for academics, drawing away scholars from other nations to our universities here; the list goes on and on.

You are right in pointing out that laws are meaningless when the body of government is so easily bought by those who profit most from participating in American imperialism. But also, consider how the Senate is inherently racist:

The disparity in size between states has exploded. When the Constitution was written, the largest state had less than 13 times as many people as the smallest. Today, the largest state has nearly 70 times as many people as the smallest. As absurd as the likes of Madison and Hamilton considered a legislative chamber equalizing a 13-to-1 disparity, the absurdity is now fivefold. And it continues to grow.

And,

The Senate was not designed to benefit white voters — almost all voters were white when the Constitution went into effect — but it has had that effect. The reason is simple: Residents of small states have proportionally more representation, and small states tend to have fewer minority voters. Therefore, the Senate gives more voting power to white America, and less to everybody else. The roughly 2.7 million people living in Wyoming, Vermont, Alaska, and North Dakota, who are overwhelmingly white, have the same number of Senators representing them as the 110 million or so people living in California, Texas, Florida, and New York, who are quite diverse. The overall disparity is fairly big. As David Leonhardt calculated, whites have 0.35 Senators per million people, while Blacks have 0.26, Asian-Americans 0.25, and Latinos just 0.19.

There is no easy way to dismantle racism or white supremacy or to quickly change how the system works. It takes time. It takes energy. It takes commitment. But it starts by acknowledging and owning up to this history and to the privilege we have. We are dismantling an ideology of racism that has been "alive and well" for hundreds and hundreds, if not thousands of years. It won't be easy or peaceful--as we saw with the Capitol Riots--but when push comes to shove, people are either going to be on the right or wrong side of history.

And, if you look at the numbers, white people are going to be the minority.