Of course, that is what Capitalism is, explicitly. But the so-called "middle class", more accurately the Petty Bourgeoisie, is all but gone already. These tariffs specifically aren't protecting anyone. They are extreme to the point that they are reducing the ability for the Proletariat to even be that. We already own nothing we produce, nor the tools by which we produce, and when the profit margin that can be extracted is reduced to this degree, the Bourgeoisie has less than no reason for the production to continue. They already have their billions. They don't feel this at all, and more to the point, they do not care if the Proletariat can afford to eat when there is no profit left to extract from them.
The status quo in which we live has never cared to protect laborers unless it also benefits the extractors. They will happily watch us all starve to death unless there comes a time when we understand that we should, must, be putting the extractors themselves on the menu.
Eat the fucking rich, because they won't give a fuck about us until we show them that the weight of the populus will devour them to sate the hunger they created. Until then, we'll keep starving and they won't care.
We are the means of production, and it's well past time we recognized that.