Why is the American flag at half-staff this week?

Donald Trump utilized social media on Sunday to address the specific reasons why the American flag is being flown at half-staff during the current week. The reports indicate that Trump took to these digital platforms to provide information or commentary regarding the status of the national flag. This action occurred on Sunday, focusing on the protocol of lowering the flag to half-staff, as detailed across the provided sources regarding the recent events and Trump's communications.