Trayvon Martin's shooting rightly provoked widespread indignation and outrage throughout America. Yet this weekend, our government could certify that Colombia has fulfilled its workers' rights obligations and allow the U.S. free trade agreement with Colombia to fully take effect.

That, says Steelworkers (USW) President Leo Gerard in a post at AlterNet, would be turning "our backs on the 30 trade unionists slain in Colombia last year and the six that Justice for Colombia reports have been murdered already this year."

Americans don’t countenance murder, particularly when it’s racially or politically motivated. Americans are justice-seeking and fair-play-believing. And that is why we, as a country, cannot certify that Colombia has fulfilled its obligations under the Labor Action Plan.

The certification could take place this weekend at the Summit of the Americas in Cartagena, Colombia, Gerard says.

Read the post here.