Kaveh Waddell reports in The Atlantic:
70 percent of Americans say they’ve seen others harassed on the internet. For black users, that rose to 78; among younger users and lesbian, gay, and bisexual Americans, the proportion is close 90 percent. One in four internet users—not just those who faced abuse online—decided not to post something online for fear of harassment. Among women between the ages of 15 and 29, 41 percent of respondents said they’d censored themselves to avoid being harassed.