About 1.5 million people clasped hands, creating a human chain that stretched 250 miles through Catalonia to demonstrate they no longer wanted the northeastern region to be part of Spain.
It was 2013, and American writer and translator Liz Castro was a link in that chain.
She said it was one of the most remarkable experiences she’s had fighting to make her adopted home a new European nation.
“I think we really proved to ourselves that we had this mobilizing ability, this organizational capacity,” she said. “And people were happy.”