Figure 1

Themes of the coding scheme
| Theme | Explanation | |
|---|---|---|
| 1. | Shelter | Offering a safe place to stay and transportation |
| 2. | Pride | Expressions of pride |
| 3. | Sharing info # | Sharing information about #openstockholm |
| 4. | Request for help | Asking others for a safe place to go or transportation |
| 5. | # | Tweeting only #openstockholm (exists alone but also used for the purposes of replying to another user, forwarding a message that offers shelter and sharing a message that spreads information about #openstockholm) |
| 6. | Shelter RT | Retweeting an offer of shelter |
| 7. | Solidarity | Expression of solidarity |
| 8. | Instruction | Sharing information that helps others to know what to do |
| 9. | Comment | General comment of the event |
| 10. | Information | Information about the ongoing event |
| 11. | Anger | Expression of hate and anger |
| 12. | Safety check | Telling others that the sender of the message is ok |
| 13. | Warning | Warning people not to share their personal information online |
| 14. | Own action | Telling others what the sender of the message is currently doing |
| 15. | Spreading rumour | Spreading false information |
| 16. | Refuting rumour | Refuting false information |
| 17. | Other | Irrelevant message |
| 18. | Not available | Tweet is not visible |
