Hello Virginie,
Great question!
We do have Facebook Events, which allows you to import events from Facebook to The Events Calendar.
However, the plugin only allows you to import events from public Facebook pages that you enter directly into the settings. In other words, you would have to tell the plugin which pages to search rather than searching all public pages for a specific keyword.
That sounds like it could be a deal breaker for you, but does it at least help answer your question? Please let me know.
Thanks so much!
Geoff