Teenagers are committing more crimes， with a year-on-year rise of 13 percent since 2000， and children of migrant workers are primarily responsible.According to Shao Wenhong， Head of the Research Bureau under the Supreme People's Court， children of migrant workers accounted for 70 percent of juvenile(青少年的) crimes nationwide. When Shao revealed this shocking fact， she might have been concerned that the situation could get out of hand and lead to social upheaval， but who should be blamed?