There is no evidence he ever saw the protestors- but his security team decided that those "legally protesting citizens on public property" who were not in any way harming a private business or its employees decided to sneak him out the back door, perhaps to keep his innocent, fragile eyes from seeing that citizens with the same rights (well, fewer rights now than he's granted) from learning that some people disagree with his lying that led to the terrible decisions he's not only voting on but even pushing as one of the Supremes.
Why excuse him as an everyday working man just trying to enjoy his multi-hundred-dollar meal (which your everyday working man can't dream of affording) as a "hungry man so distraught (by something he never saw) that he HAD to "sneak out'? I think I'm missing something in your reasoning and let's just be honest: the Supremes are coming for our rights, anyway. Being 'nice' and subservient to them won't change a single thing.
Congress, however, can. And no Republican-led Congress will ever do any such things as codifying our rights into law so that leaves the Democratic Party, which can't help, either, without far more Senators and House representatives.