Question: Has there ever been a threat of violence by fans against critics?
About the article "The Dark Knight Rises", section "Reception".

Candidate passages:
According to the Memorandum of Findings and the suspension letter, there was no finding that Wooten ever made any threat of violence against any person, other than Heath.
The alleged threat against Heath was witnessed by no one outside the family.
The suspension letter did not mention that threat.
Another alleged threat, to "bring down" Sarah and her family, was witnessed only by McCann, and she stated that she understood it was not a threat of violence, but rather a threat "to make life difficult" for them.
According to various statements by Palin et al., Wooten has made violent threats against various other members of her family, aside from Heath.
For example, on September 15, 2008, Palin said Wooten had made "threats of violence" against McCann and Palin's nephew. 
There are two theories as to the origins of the chant.
One holds that it was invented in the 1960s by Oxford United football hooligans to threaten visiting fans, while the other holds that it was invented more generally and slightly later in the 1970s on the terraces of football grounds.
The chant is often used as an intimidatory chant towards the opposing fans rather than as an actual threat of violence, but there have been a number of occasions when it has led to a fight between fans.
The chant is sometimes used after the opposition have scored.
It is now considered to be a dated chant with little current usage in English football culture.
The chant also started being used in 2007 by professional wrestling fans in insulting the opponents before the matches of former Ring of Honor and current WWE American wrestler, Daniel Bryan.
The chant was mainly used for Bryan when he was wrestling in Ring of Honor under his real name of Bryan Danielson, although fans sometimes used alternatives such as "You're gonna get your fucking head kicked off."
and "He's gonna get his fucking head kicked in".
It was first used by wrestling fans in reference to the power of Bryan's kicks.
It is also used by fans during Bryan's entrances. 
Union violence is violence committed by unions or union members during labor disputes.
When union violence has occurred, it has frequently been in the context of industrial unrest.
Violence has ranged from isolated acts by individuals, to wider campaigns of organised violence to further union goals within an industrial dispute.
Anti-union violence has also occurred frequently in the context of industrial unrest, and has often involved the collusion of management and government authorities, private agencies, or citizens' groups in organising violence against unions and their members.
According to a study in 1969, the United States has had the bloodiest and most violent labor history of any industrial nation in the world, and there have been few industries which have been immune. 
Men's rights activists assert that domestic violence by women is ignored and under-reported, in part because men are reluctant to describe themselves as victims.
They state that women are as aggressive or more aggressive than men in relationships and that domestic violence is sex-symmetrical.
They frequently cite family conflict research by Murray Straus and Richard Gelles as evidence of sex-symmetry.
Men's rights advocates argue that judicial systems too easily accept false allegations of domestic violence by women against their male partners.
Christina Hoff Sommers has commented that "false claims about male domestic violence are ubiquitous and immune to refutation."
Men's rights advocates have been critics of legal, policy and practical protections for abused women, campaigning for domestic violence shelters for battered men and for the legal system to be educated about women's violence against men.
Some critics have rejected the research cited by Men's rights activists and dispute their claims that such violence is gender symmetrical, arguing that the focus on women's violence stems from a political agenda to minimize the issue of men's violence against women and to undermine services to abused women.
Donileen Loseke, Mary Cavanaugh and Richard Gelles cite as an example the challenge to the Minnesota Battered Woman's Act by the Men's Defense Association claiming that it was discriminatory because it protected women but not men. 
Conflicts are typically extremely complex with multiple inter-dependent causalities, often referred to as ‘complex emergencies.’ Climate change has the potential to exacerbate existing tensions or create new ones — serving as a threat multiplier.
It can be a catalyst for violent conflict and a threat to international security.
Climate change does not always lead to violence as there are a number of other factors that contribute to why conflict between groups occurs The United Nations Security Council held its first-ever debate on the impact of climate change in 2007.
The links between climate change and security have been the subject of numerous high-profile reports since 2007 by leading security figures in the United States, United Kingdom and the European Union.
The G77 group of developing nations also considers climate change to be a major security threat which is expected to hit developing nations particularly hard.
The links between the human impact of climate change and the threat of violence and armed conflict are particularly important because multiple destabilizing conditions are affected simultaneously.