Example arguments
A majority of people voted that democracy is the most effective form of determining how effective something is. Therefore democracy is the most effective form of determining how effective something is.
Every intentional act of killing a human being is morally wrong. The death penalty is an intentional act of killing a human being. Therefore the death penalty is wrong.
Everybody knows that communism is bad. Senator Joseph McCarthy is hunting communists down. If I dissented from his policy, I'd be supporting the communism, and therefore I'd be anti-American. I am a good American citizen, therefore McCarthy's policy is correct.
Tobacco company representatives are wrong when they say smoking doesn't seriously affect your health, because they're just defending their own multi-million-dollar financial interests.
Tobacco company representatives may be biased when they say smoking doesn't seriously affect your health, because of their own multi-million-dollar financial interests. Thus, such statements may be wishful thinking, or even outright lies, on their part.
Scientists can make mistakes, thus it might be possible that they made a mistake as to whether smoking causes lung cancer.  If they are mistaken then they should not have had to pay compensation to all those smokers.
If someone is human , then she is mortal. Anna is mortal. Therefore Anna is human.
You should stop drinking unless you want to die young like your father.
If al-Qaeda is calling somebody in America, we need to know why in order to stop attacks.
If polar bears are dominant in the Arctic, then there would seem to have been no need for them to evolve a white-coloured form of camouflage
I cannot imagine any way for Michael Jackson to have slept with young boys without having sex with them. Therefore he must be guilty of the crime of statutory rape.
According to a survey of delegates at the Communist Party Convention, the Communist Party is the most popular political party in the country.
Not eating causes anorexia nervosa.
Since the 1950s, both the atmospheric CO2 level and crime levels have increased sharply. Hence, atmospheric CO2 causes crime.
Anne: "All cats are animals. Ginger is an animal. This means Ginger is a cat.". Bill: "Ah you just committed the affirming the consequent logical fallacy. Sorry, you are wrong, which means that Ginger is not a cat".
If the death penalty does deter some criminals from serious crimes, then it should be considered as a possible means of punishment.
There are many hackers that use the internet. Therefore, if you use the internet without a firewall, it is inevitable that you will be hacked sooner or later.
When soccer becomes popular in a town, hooliganism will become a major problem. Thus, if we allow a soccer team in our town, we will be overrun by hooligans.
The overwhelming majority of climate scientists believe that human emissions of CO2 is contributing significantly to the observed global warming.  Thus those scientists who are funded by the big oil companies are wrong.
It's silly for you to claim that Hitler would not have attacked the United States if they hadn't entered World War II. Everyone knows that he planned to conquer the world.
In a court of law, the jury vote by majority, therefore they will always make the correct decision.
I think, therefore I am.
Most of the voting members at the last Rotary Club meeting thought that the Club should hold a fund-raiser in October. Therefore, the Club should hold a fund-raiser in October.
I have seen a black swan.  Therefore you can not correctly say that "Swans are white".
Nearly all Americans think that you should drive on the right side of the road. Therefore, you should drive on the right side of the road in the United States.
All students carry backpacks. My grandfather is a student. Therefore, my grandfather carries a backpack.
Person A: I don't think children should run into the busy streets. Person B: I think that it would be foolish to lock up children all day with no fresh air.
A feather is light. What is light cannot be dark. Therefore, a feather cannot be dark.
Mark is late for work. Either his car has broken down, or he has overslept. We telephoned and learned he isn't at home, so his car must have broken down.
Violent gangs are running amok on the streets. Therefore, we must increase police enforcement or let them run loose.
I loved the hit song, therefore I'll love the album it's on
Baseball player Mark McGwire just retired. Clearly, he will end up in the Hall of Fame. After all, he's such a nice guy, and he gives a lot of money to all sorts of charities.
When the light is red the car stops.  The car is stopped, therefore it is at a traffic light.
If one is short, then adding a mere 1mm to one's height makes no difference - one is still short!
John wishes to speak to whoever is in charge. The person in charge is Steve. Therefore John wishes to speak to Steve.
If every event has a cause; the universe has a beginning and all beginnings involve an event, then this implies that the beginning of the universe involved an event; that therefore the beginning of the universe had a cause and thus that the universe had a cause. 
If you decide how others have to live, this can cause conflict and war.  Thus people have to be free to choose their own way of life.