article_snippet.sent: Dramatic images captured the moment four officers took down and restrained a tracksuit-wearing man near the entrance to the park - just yards from a prominent police sign which read: 'Possession of cannabis is illegal'.
article_snippet.sent: Taking him down: four officers were seen rushing towards the man at the entrance to Hyde Park .
article_snippet.sent: Restrained: The pro-cannabis protestor is pushed down to the ground just yards from a police sign reading: 'Possession of cannabis is illegal' Thousands of campaigners were seen sitting on the grass openly smoking marijuana, comparing the size of Thousands of campaigners joints and listening to speakers while dozens of police officers hovered nearby.
article_snippet.sent: Many protestors handed out cannabis leaf-shaped fliers and carried signs, with one reading: '
article_snippet.sent: A Met Police spokesman said: 'Anyone seen by an officer openly smoking cannabis in Hyde Park or in the Westminster area could be issued with a warning or face arrest.'
article_snippet.sent: A man wearing a President Obama mask holds a marijuana joint to A man wearing a President Obama mask mouth in Hyde Park today .
article_snippet.sent: Campaigners were seen  openly smoking cannabis while dozens of police officers stood nearby .
article_snippet.sent: Four people hold Four people marijuana joints together with a bag full of the drug visible in the centre of the photo .
article_snippet.sent: Checking for drugs: Police officers stop and search a visitor to Hyde Park this afternoon .
highlights_snippet.sent: Crowds seen openly smoking marijuana as police officers stood nearby .
  