Many of those tweets contain direct threats of violence. They need to be reported to law enforcement, not flagged for Twitter to deal with.
Also, it seems unusual to hold Twitter responsible for their users' speech. UI tweaks may reduce the amount of hatred seen, but they are not going to solve this problem.
Lastly, I spent some time perusing other posts on this blog. They are not furthering any discussion, to put it mildly. Likewise, I doubt the comments here will generate much light. It's a sad situation, but I don't think HN has much to contribute.
Also, it seems unusual to hold Twitter responsible for their users' speech. UI tweaks may reduce the amount of hatred seen, but they are not going to solve this problem.
Lastly, I spent some time perusing other posts on this blog. They are not furthering any discussion, to put it mildly. Likewise, I doubt the comments here will generate much light. It's a sad situation, but I don't think HN has much to contribute.