With an overwhelming majority of 159 votes in favour and 22 against, the Bulgarian parliament has passed a law that bans "propaganda," "promotion," and "incitement of children" towards "non-traditional sexual relationships." These relationships are defined in the law as "different from the generally accepted and established notions in the Bulgarian legal tradition of emotional, romantic, sexual or sensual attraction between persons of opposite sexes."

The law also prohibits informing children about a "gender identity different from the biological one." Referring to someone's "biological" gender is considered transphobic because it denies a person's gender identity.

The international LGBT+ organisation ILGA criticises the law, pointing to Russia as an example. According to the organisation, it is an attack on children's rights and it "borrows from Russia’s toolkit of anti-human rights and anti-democratic legislation." The organisation also condemns the provision that the ban applies in the "vicinity" of schools. Bulgarian LGBT+ organisations describe it as a "witch hunt" and call the law "discriminatory." Parliamentarians who voted against the law noted that some sections of the text on traditional sexual relationships were copied from Wikipedia. Centre-parliamentarian Elisaveta Belobradova calls the law "cheap populism."

The law originates from the ultranationalist party Revival, which in Europe is part of the same family as the far-right party Alternative For Germany. Revival is anti-American, anti-NATO, and also pro-Russian.