What is the fine-grained topic of the following text: He also hosted a "first annual" bike ride down the Santa Monica/Venice beach bike trail, where he proved that even a leisurely bike ride can inspire policy discussions: Davis and the students stopped by a SnapChat kiosk to learn about SnapChat Spectacles, which of course led to a discussion about the product's privacy implications! Only return the topic.
A bike ride leading to a discussion on Snapchat Spectacles' privacy implications