Huge crowd. Organisers estimated 60,000. By jillfavero Hundreds of thousands of people are expected to take to the streets this weekend in a bid to put pressure on leaders to take action against climate change. Will you be taking part? Perhaps you’ll be designing your own placard to take with you. If so we’d love to see photos of your designs which we’ll include in a round-up on the site. If you’re planning on attending in the march in London, Mumbai, Tokyo or elsewhere we’d also like to hear from you. Whether you’re going with friends or family, share your pictures and videos with us and we’ll feature the most interesting in our live blog and in a gallery on the site. Subscribe to the GuardianWitness channel - http://bit.ly/ZxgdZG Share your view of the world: https://witness.theguardian.com Posts will be reviewed and suitable contributions will be published on GuardianWitness, with the best pieces featured on the Guardian site. #GdnWitness For more from the Guardian click below Guardian News: http://www.youtube.com/user/TheGuardian Guardian Music: http://www.youtube.com/user/GuardianMusic