JAKARTA, Indonesia — When hard-line Islamists marched on Indonesia’s Parliament to protest what they consider the growing influence of communism, they could hardly have picked a more ironic place to gather — near the 80,000-seat Gelora Bung Karno Stadium.

The stadium, opened in 1962, was built with Soviet-raised money.

Jakarta’s National Monument — where hundreds of thousands of Islamic hard-liners held rallies in 2016, demanding that the capital’s Christian governor be lynched for blasphemy — was inspired by Soviet architecture.

So were the Welcome Monument, a statue surrounded by a large water fountain on Jakarta’s largest roundabout, and the Heroes Statue, of a young peasant being offered food by his mother as he prepares to go to war — a symbol of Indonesia’s struggle for independence from the Dutch.