She explained it pretty clearly:

Legislature (law makers, ie. Congress, Assembly, etc.) passes law.

Citizen doesn't want to follow law. Thinks law violates freedom.

Citizen sues government.

Lower court (eg. 9th circuit) hears case, makes ruling.

Citizen or Government appeals the case to Supreme Court and the supreme court after a process ("cert", short for Certiorari) agrees to hear the case and make a ruling on whether the law passed by the legislature falls within the scope of the powers of government granted by the Constitution (ie. whether or not a law is "constitutional")

You can see why Leftists hate "conservative" SCOTUS judges because the Constitution is clear on the limitations of government. The founders did not want a powerful government, because a powerful government by nature limits the liberty of the individual. If the Constitution is followed, Leftists cannot make totalitarian laws. They hate that.

She explained it pretty clearly:

Legislature (law makers, ie. Congress, Assembly, etc.) passes law.

Citizen doesn't want to follow law. Thinks law violates freedom.

Citizen sues government.

Lower court (ie. 9th circuit) hears case, makes ruling.

Citizen or Government appeals the case to Supreme Court and the supreme court after a process ("cert", short for Certiorari) agrees to hear the case and make a ruling on whether the law passed by the legislature falls within the scope of the powers of government granted by the Constitution (ie. whether or not a law is "constitutional")

You can see why Leftists hate "conservative" SCOTUS judges because the Constitution is clear on the limitations of government. The founders did not want a powerful government, because a powerful government by nature limits the liberty of the individual. If the Constitution is followed, Leftists cannot make totalitarian laws. They hate that.