why does america lose its head over terror, but ignore its daily gun deaths?

guardian | So for those of you keeping score at home – locking down an American city: a proper reaction to the threat from one terrorist. A background check to prevent criminals or those with mental illness from purchasing guns: a dastardly attack on civil liberties. All of this would be almost darkly comic if not for the fact that more Americans will die needlessly as a result. Already, more than 30,000 Americans die in gun violence every year (compared to the 17 who died last year in terrorist attacks).

What makes US gun violence so particularly horrifying is how routine and mundane it has become. After the massacre of 20 kindergartners in an elementary school in Newtown, Connecticut, millions of Americans began to take greater notice of the threat from gun violence. Yet since then, the daily carnage that guns produce has continued unabated and often unnoticed.

The same day of the marathon bombing in Boston, 11 Americans were murdered by guns. The pregnant Breshauna Jackson was killed in Dallas, allegedly by her boyfriend. In Richmond, California, James Tucker III was shot and killed while riding his bicycle – assailants unknown. Nigel Hardy, a 13-year-old boy in Palmdale, California, who was being bullied in school, took his own life. He used the gun that his father kept at home. And in Brooklyn, New York, an off-duty police officer used her department-issued Glock 9mm handgun to kill herself, her boyfriend and her one-year old child.

At the same time that investigators were in the midst of a high-profile manhunt for the marathon bombers that ended on Friday evening, 38 more Americans – with little fanfare – died from gun violence. One was a 22-year old resident of Boston. They are a tiny percentage of the 3,531 Americans killed by guns in the past four months – a total that surpasses the number of Americans who died on 9/11 and is one fewer than the number of US soldiers who lost their lives in combat operations in Iraq. Yet, none of this daily violence was considered urgent enough to motivate Congress to impose a mild, commonsense restriction on gun purchasers.

It's not just firearms that produce such legislative inaction. Last week, a fertiliser plant in West, Texas, which hasn't been inspected by federal regulators since 1985, exploded, killing 14 people and injuring countless others. Yet many Republicans want to cut further the funding for the agency (OSHA) that is responsible for such reviews. The vast majority of Americans die from one of four ailments – cardiovascular disease, cancer, diabetes and chronic lung disease – and yet Republicans have held three dozen votes to repeal Obamacare, which expands healthcare coverage to 30 million Americans.

It is a surreal and difficult-to-explain dynamic. Americans seemingly place an inordinate fear on violence that is random and unexplainable and can be blamed on "others" – jihadists, terrorists, evil-doers etc. But the lurking dangers all around us – the guns, our unhealthy diets, the workplaces that kill 14 Americans every single day – these are just accepted as part of life, the price of freedom, if you will. And so the violence goes, with more Americans dying preventable deaths. But hey, look on the bright side – we got those sons of bitches who blew up the marathon.