Subtitle 52Protective Measures § 52-1. Obstructions in parks and squares. § 52-2. Glass containers. § 52-3. Defacement, etc., of monuments. § 52-4. Mount Vernon Place – Ornamental structures. § 52-5. Mount Vernon Place – Injuring grass or shrubs. § 52-6. Battle Monument, etc. § 52-7. Herring Run Park.