I choose not to engage in intellectual games with you. I will not draw that line, nor is it useful to draw that line today.
But if it helps, I'll say that I'd allow a president to shoot a suspect in the leg several times if it meant saving several thousand American lives. And if it helps, I'll tell you that I supported Lincoln's bold actions during the Civil War. I might have drawn a line with FDR's actions regarding Japanese Americans, though I'm not sure, I wasn't around then to feel the threat and fear that my parents felt about possibly losing their freedom FOREVER via Japanese or German totalitarianism.
I think you won't draw the line because you have no line. You talk like a fully-capitulated statist.