Staten Island teachers say they're wearing the shirts because the UFT backed Rev. Al Sharpton's march.
The NYPD Hate Crimes Unit is investigating a half-dozen cars found with racist graffiti, they said.
The protest, led by the Rev. Al Sharpton, started at the site of Eric Garner's deadly arrest.
The rally will be held on Staten Island a month after Garner died while being arrested in Tompkinsville.
Saturday's rally by the Crown Heights Tenants Union aims to secure a rent freeze, organizers said.
"The Goddess Walk," organized by burlesque dancer Sweet Lorraine, marched from Fulton Park on Saturday.
The Universal Hip-Hop Parade for Social Justice is now in its 14th year.
James E. Davis' "Love Yourself, Stop the Violence" peace walk enters its 20th year.
Luis Hernandez was replaced by current COO and vice president Patrick J. Sullivan.
Sade Adona said cops threw her to the ground and beat her shin with a baton during Occupy march.
About 500 advocates marched from Coffey Park to LICH, Sunday.
Two events will be held this weekend, on April 5 and April 7.
City Council Speaker Christine Quinn said it was "less and less likely" that LICH would be saved.
Residents will march to draw attention to ongoing recovery efforts on Staten Island.
Arlene Delgado urged parents to be involved in their children's lives after the death of Raphael Ward.
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