It broke down/ruptured.

A man in a dark coat and patterned scarf speaks into a microphone, wearing a red flower pin, with a crowd and a large banner in the background; the scene cuts to a wide shot of a group of people, including military personnel and civilians, standing on a platform with red flags and a banner reading "С ДНЕМ РОЖДЕНИЯ РАБОЧЕ-КРЕСТЬЯНСКОЙ АРМИИ!" before returning to the man speaking.