I am older, so I can remember when there were parades, that featured the military, such as during Memorial Day and Veterans days. The parades contained more than just the active military. It contained active military, veterans, high school boy and girl officers, girl and boy scouts, and local charities and dignitaries. These parades ended about the time of the hippy generation and the Viet Nam War.
Before then, these parades were very enjoyable as a child. In many ways, it was designed as much for the children as for the adults. As a child, you sat in awe of the soldiers, who protected you. After the parade, every boy would want to play soldier, or even dream of being a solider, that everyone is cheering for. One could even see the young ladies, so proud of their man. This observation would induce a romantic fantasy of your favorite girl seeing you in the parade.
Since the children enjoyed the parade, their parents would take them, and cheer, so they could lead as an example; make it more fun. As a child, you would see the older citizens, many with canes, with their old timer military hats, from past wars. They would salute and be saluted proudly, feeling good about their service. The children would then see the same elderly, differently, when you realized they were once that soldier too.
The point of the entire exercise, was to gather all the generations, together, and come to a common focus about the job and the sacrifice of the military, past, present and future. It is a very ancient tradition, as old as culture. It was necessary to keep cultures, safe from threat, past, present and future. You needed the next generation to do the scary stuff. There will always be bad guys, who do not follow the law. The good citizen need to be prepare, less their culture go the ways of the dinosaurs.
Trump is older and remembers this past, before the Viet Nam war. He is making America great again; Eisenhower days. As an experiment, parents don't poison the well. Instead, stay neutral and bring the children to watch to see what happens. They will see the soldiers, the equipment and even the elderly veterans. They become part of the past, present and future.