Young people came up with a new form of protest in Hong Kong on Friday morning by taking their own buckets and towels to clean up Kwai Fong MTR station, where police fired tear gas during anti-government demonstrations last weekend.At least seven protesters joined the clean-up action responding to an online call to highlight the railway operator’s “failure” to pursue police over why tear gas was fired at the station. The online call also urged people to stop trains that had not yet been cleaned…