Those laws significantly impact blacks more than whites.

A quick google search:
Logistic regression analysis of individual-level data on over 171,000 California prison inmates indicates that African-Americans are more likely than whites and Latinos to receive third-strike sentences, even when legally relevant variables are controlled. The analysis also finds that Latino defendants are significantly less likely to receive third-strike sentences. The results also indicate that the black-white gap is greater for offenses known as “wobblers,” which can be filed as either felonies or misdemeanors than for offenses that must always be charged as felonies.