And, the parade has two other bonuses:
1) It keeps the military busy with the marching rehearsals - otherwise they would all be bored and growing fat bellies (it's not like they are busy with anything aside from pleasing President Trump).
2) As the tank weight will destroy the streets, it will allow to employ more people re-making the streets later.
Indeed, the Trump Parade™ will be a win-win-win situation.