How do you trash items on new Mac Photos?
Hit the delete key while a photo is selected or while viewing a photo. To recover photos, a "Show Recently Deleted" option is available in the File menu. On this screen you can permanently delete a photo or recover it within 30 days.
If you don't want to wait 30 days...
- Select a photo
- Press the "Delete" button
- Confirm delete
- Select "Album" from the top of the window (see screenshot)
- Double click on "Recently Deleted" album to open it
- Select "Delete All"