While many Super Bowl advertisers chose to be silly or sentimental with their commercials on Sunday, it was the few that ventured — or appeared to venture — into political territory that attracted the most attention.

Among the major brands that used their commercial time for social commentary was Airbnb, which had decided just last week to run an ad. In the ad, the company promoted its view of an open, multicultural world, reflecting its commitment to housing refugees.

Coca-Cola revived an ad it ran during the 2014 Super Bowl featuring people singing a multilingual version of “America the Beautiful.” It managed to strike a new chord with viewers, given the recent national conversation around immigration and diversity, and it prompted a flood of conversation on Twitter.

“I thought it was great for Coke to air an old ad because today it feels even more relevant than it did in 2014 when they first aired it,” said Lynn Power, chief executive of J. Walter Thompson New York. It was a smart move from the brand to re-up an old message, she added, given that “you can’t say it’s a reactionary thing.”