Shoulda used caltrops*; they worked against medieval cavalry and WW II airfields, and would work be far more effective against modern day anti-Semites than mere thumbtacks

Give ‘em something to really cry about

Oh, the humanity! Philadelphia Kristallnacht celebrant discovers thumbtacks strewn across his path.

Came home from the Philadelphia boycott bike ride wondering why the traction on my shoes was less than usual and have discovered that they’re covered in tacks that were deployed on the crowd by Zionist counter protestors https://t.co/8beGMdhBhW

— James🔻 (@GoodVibePolitik) November 8, 2026

* “Caltrops are small, spiked metal devices designed so that, however they land, one sharp point always faces upward. Used since antiquity, they were deployed in medieval warfare to injure the hooves of advancing cavalry horses, slowing or disrupting enemy charges. During World War II, similar devices were also used to obstruct airfields and damage the tires of enemy aircraft attempting to land.”

UPDATE: Who knew? Caltrops are still available on EBay, and you no longer have to hand forge your own!