Arlington Heights (page 810)

 Consider two possible zoning laws:

1. The first zoning law excludes "non-white persons" from the community.

2. The second zoning law allows only single-family residential use and thus excludes apartments and duplexes from the community.

In Arlington Heights, the Pls were arguing that zoning law number 2, like zoning law number 1, constituted an unconstitutional racial classification under the Equal Protection Clause of the 14th Amendment, because the second law had "racially discriminatory effects."

Do you understand this argument?