Homosexual marriage should be supported.

Write an essay arguing your position on this issue. Your purpose is to try to convince your readers to take your argument seriously. Therefore, you will want to acknowledge readers opposing views as well as any objections or questions they might have.
To write a strong argumentative essay, you need the following:
A clear and thorough grasp of the issue.
A convincing, well-defined thesis that is debatable.
An awareness of and response to opposing points of view.
A clear sense of your audience.
The ability to distinguish between opinion and facts.
Solid supporting evidence.
Logical organization.
Accurate, fresh, and appropriate word choice.