Along Texas' floating border barrier, migrant children left bloody by razor wire

The rise in nationalist sentiment since Donald Trump’s second inauguration has been extraordinary. Flags fly higher. Political speeches lean harder into “Canadian values.” Nationalism is inherently interesting. There are varieties: left, right, civic, ethnic. There are different, competing definitions. There are benign, if cloying, manifestations and malignant ones. As a sentiment and a commitment, it’s important to examine and understand nationalism since it’s also a kind of currency that can be spent, or a force that can be mobilized, and not necessarily for good. Indeed, nationalism...