We have just recently rolled out moderation tools in chat for streamers.
This is actively being worked on & will improve over time.
You can right click on messages and delete them as shown below:
You can ban users from your chat by right clicking on their username:
Note, you cannot currently unban users. This will be released soon.
You can now also clear your chat with /clear and Mod other users with /mod username
Moderators will have this badge in chat:
The goal with these moderation tools is for you to be able to facilitate your own stream & community, however if someone is consistently abusing your chat, please report it by contacting us with evidence.