President-elect Donald Trump railed against the order for American flags to be flown at half-staff to honor the late President Jimmy Carter, complaining that they will be in that position “for the first time ever during an Inauguration of a future President.

Here's why flags are flying at half-staff, and why President-elect Donald Trump isn't thrilled with the decision.

Donald Trump raged online over flags in the capital being flown at half-mast during his inauguration to mourn the passing of Jimmy Carter.