A long-awaited playground at the Dzantik’i Heeni campus may teach students about municipal politics and the First Amendment, since a few commemorative bricks sold as fundraisers for the project are engraved with messages criticizing Juneau Assembly and school board members.

The messages are from Emil Mackey, a former Juneau Board of Education member, who said in an interview Wednesday he made the donations for the bricks — after his departure from office last fall —…