Possible Clues:

• Stop welcoming platform for the art of incongruity
• Infantile pop music's introduction is included within movement
• Block securing platform for artistic movement
• Movement to keep platform in check
• The old man is embraced by a maiden in a movement defying social convention
• Avant-garde creative movement
• Platform adopted by crazy revolutionary movement
• Surprising movement in platform in Embankment?
• Mother holds the stage presenting art movement
• Elevated position embraced by parent's artistic movement