Amazon.com is selling T-shirts that say “Make Israel Palestine Again,” a not-so-subtle endorsement of ending the State of Israel. The shirts are listed as “In Stock. Ships from and sold by Amazon.com.” This stands in contrast with some merchandise Amazon sells that comes from third-party sources.

Similar hate-filled shirts are available on Etsy.com.

The slogan “Make Israel Palestine Again” is used often on social media, including a Twitter page and an Instagram account. An image on the Twitter feed shows President Trump wearing a “Make America Great Again” hat Photoshopped to say “Make Israel Palestine Again.”

Boycott, Divestment, and Sanctions (BDS) activist Miko Peled used the “Make Israel Palestine Again” hat as his Twitter avatar. Peled has also linked to a petition that calls Israel’s existence into question. The BDS movement aims to isolate Israel politically and economically, using sanctions and boycotts of Israeli goods.

Zazzle.com, a website that allows people to create items with their own messages and sell them, hosts a store belonging to the US Campaign for Palestinian Rights (USCPR), letting people buy merchandise emblazoned with the USCPR’s logo. Tax records show the USCPR acts as the US-based financial agent for the BDS National Committee, the group responsible for coordinating the BDS movement worldwide. The BDS National Committee counts a group called the Council of National and Islamic Force in Palestine — a coalition that includes representatives from Hamas and other terrorist groups — as a member organization.

Amazon corporate communications did not respond to an email seeking comment.

John Rossomando is a senior analyst at The Investigative Project on Terrorism.