Protesting may ostensibly not change anything, but not protesting will assuredly not change anything. From T.L. Davis at tldavis.substack.com:

Let me start with the condition of life in America. We are and have been governed by an increasingly communist and fascist government. The takeover is actually complete. This is something I have struggled against since I was in my early twenties. It was something I noticed in high school. Rebellion against that and the strong desire I had for freedom were chronicled in the novel Rebel. In it is the source of my overall rebellion against this trend toward communism and fascism through education.
There is considerable pushback for the idea of the convoy headed to Eagle Pass, Texas. There are two other convoys occurring at the same time by the same people and headed to different places. These convoys are simple expressions of opposition for the manner and degree that illegal aliens are being coddled by the present administration. This is a crisis that has gotten out of control and will continue for the foreseeable future and none of these convoys are going to stop it. I fully understand that, but that doesn’t mean that they serve no purpose, or are an inept expression of outrage.
Visible opposition serves a purpose. It draws the large media outlets to address it and report on it, if only to cast it in a negative light. Unwittingly, they alert the silent majority that they do have have allies. It informs the masses that some people are willing to stand up to the illegal and outrageous actions of government, despite the threats of retaliation. Responses to such events can dominate the social media outlets, at least those honest enough to allow it. The purpose, in my mind, would be to attract that attention and call for everyone who feels the same to call their representatives, or email them and demand that they shut down the border or shut down the government. This is something for which I have advocated here.