Fireworks can create a lot of smoke in the air, increasing air pollution around the Fourth of July. Many that suffer from breathing disorders can experience discomfort when exposed to air pollution caused by fireworks. Not only do fireworks increase air pollution, but the smoke can also leave behind a haze that decreases visibility. In short, yes, fireworks increase air pollution too much.
Air pollution is due to coal mines, factories, and bribable congressmen without consciences. Fireworks will not cause nearly enough smog to compete with any of the leading causes of air pollution in the world today. China is finally stepping back their coal production, trying to clean up their nation, which is mostly just smog. San Francisco is home to innumerable factories that produce tons of smog each year. Senators and House Rep's that are in it for the money are allowing their ideas to be swayed by big business, and allowing pollution to increase rampantly. Fireworks, themselves, are nothing compared to that.
No, fireworks do not increase the air pollution too much. While they do increase air pollution, fireworks are only set off on rare and special occasions. They aren't set off constantly or consistently. Therefore, since the increase in air pollution is only on occasion, the increase is not too much.
No, fireworks do not increase air pollution too much. There are many other things that humans do that do increase air pollution too much, such as industry, burning coal, driving vehicles and cattle farming. When compared to the amount of air pollution caused by any of those sources, any caused by fireworks is negligible.