Here is a sterling example of Iranian human rights, from The Jerusalem Post:

In a shocking and unprecedented interview, directly exposing the inhumanity of Supreme Leader Ali Khamenei's religious regime in Iran, a serving member of the paramilitary Basiji militia has told this reporter of his role in suppressing opposition street protests in recent weeks. ...

He said he had been a highly regarded member of the force, and had so "impressed my superiors" that, at 18, "I was given the 'honor' to temporarily marry young girls before they were sentenced to death."

In the Islamic Republic it is illegal to execute a young woman, regardless of her crime, if she is a virgin, he explained. Therefore a "wedding" ceremony is conducted the night before the execution: The young girl is forced to have sexual intercourse with a prison guard - essentially raped by her "husband."

"I regret that, even though the marriages were legal," he said.

Why the regret, if the marriages were "legal?"

"Because," he went on, "I could tell that the girls were more afraid of their 'wedding' night than of the execution that awaited them in the morning. And they would always fight back, so we would have to put sleeping pills in their food. By morning the girls would have an empty expression; it seemed like they were ready or wanted to die.

"I remember hearing them cry and scream after [the rape] was over," he said. "I will never forget how this one girl clawed at her own face and neck with her finger nails afterwards. She had deep scratches all over her."

Apparently, this was known. From a book review in 2002:

It remains to be said that the fate of women in the prisons of the Iranian Islamic Revolution is worse than the fate of men. It is not necessarily because women are less resistant and less tolerant to torture, but because women are considered from the theological perspective of the Iranian regime to be an element of seduction, and their bodies a place of evil and impurity. The torture of a woman's body may take the form of rape. Despite the necessity of secrecy that imposes itself in these cases, some women political prisoners have dared to speak up in their memoirs about the torture and rape they were subjected to. However most of the women either were not given the chance to talk or have chosen not to talk. In fact, raped women were often executed. A woman's rape is frequently the last act that precedes her execution. This is explained by the rule in Iranian political prisons that the sentence of execution cannot be carried out if the woman is a virgin. Since there is a theological belief that if a woman dies a virgin she will go to heaven, the politically active virgin is forced to "marry" before her execution and thus to insure she will go to hell. She is forced to "marry" the hangman who will carry out her execution.. This marriage is conducted as a legitimate and official contract which includes, among other things, an estimated dowry. This "dowry" is subsequently paid to the family of the victim; it simultaneously becomes the equivalent of an official notification that she was executed.

Another source:

Iran and children’s rights
Iran is the only country in the world where its legislations function directly against children.

Article 1210 of the constitution: The civil law sets the age of consent for girls to be 9 years of age!

Section 84, paragraph 179 of labour legislation defines the minimum age of prohibition of labour to be 15! The amendment article to this section, briefly, overrules the minimum age limits, should the parents or guardians of the children either give their consent or be the proprietors of where their children are employed! By parents’ or Guardians’ consent, children could also be contracted out and would be exempted from the minimum age restrictions.

Articles 623 to 625 relating to religious practices, authorises child chastisement up to causing death. Even where punishment by the father leads to the death of his child, the penalty for causing death by chastisement is 10 days in prison plus the payment of compensation!

In the Islamic Republic, the state has a free hand to suppress and terrorise, execute by stoning to death, and carry out hanging in public, Article 1210 of its constitution legalises paedophilia!

By lowering the age of consent, the abuse of children is legalised.

The signing of any international convention by the Islamic Republic is meaningless and it is only done in order to mislead the international community about its own internal affairs.

According to Islamic law, should a female die as a virgin, she will be considered a martyr and will be destined for heaven. Hundreds of 14-17 year old girls supporting the “The Peoples’ Mujahedeen” were forced to temporarily marry members of the “Revolutionary Guards Corps” before their execution. Some were forced to marry their own torturer and executioner. This was done to deny them going to heaven!

How could anyone expect respect for international conventions from such a brutal and medieval regime?

Forget WMDs, forget the theocracy, forget Iran's plans to dominate the world. I think we have the best reasons to topple the Islamic Republic right here.

UPDATE: While these stories appear to have taken place a few years ago, the Huffington Post has details on the apparent prison rape of an Iranian woman protester in the past month, as well as of an 18-year old boy.