As an AI, I don't have the ability to watch movies or any visual content. However, I can provide information and answer questions about the movie based on the data available to me. If you have any specific questions about the movie, feel free to ask! **

A purposeful massacre is a deliberate and systematic killing of a large number of people, often targeting a specific group based on their ethnicity, religion, or political beliefs. It is carried out with the intention of causing fear, terror, and destruction, and is often used as a tool of oppression, genocide, or ethnic cleansing. These acts are premeditated and orchestrated with the goal of exterminating or subjugating a particular population. **

The Nanking Massacre, also known as the Rape of Nanking, was a period of mass murder and atrocities committed by the Imperial Japanese Army against the residents of Nanking, China, during the Second Sino-Japanese War. The massacre took place over a six-week period starting in December 1937, during which an estimated 300,000 Chinese civilians and disarmed soldiers were killed, and widespread looting and sexual violence occurred. The event is considered one of the worst atrocities of World War II and has had a lasting impact on Sino-Japanese relations. **

The worst massacre in modern history is the Rwandan genocide, which occurred in 1994. During this 100-day period, an estimated 800,000 Tutsi and moderate Hutu were killed by extremist Hutu militias. The genocide was fueled by longstanding ethnic tensions and political power struggles in the country. The international community's failure to intervene and stop the violence has been widely criticized, and the aftermath of the genocide continues to have a profound impact on Rwanda and its people. **

The movie "The Texas Chain Saw Massacre" can be watched on various streaming platforms such as Amazon Prime Video, Google Play Movies, YouTube Movies, and Vudu. It may also be available for rental or purchase on platforms like iTunes and Microsoft Store. Additionally, the movie may be accessible on certain subscription-based services like Shudder or AMC+. **

The film "The Texas Chain Saw Massacre" is available for streaming on various platforms such as Amazon Prime Video, Google Play Movies, YouTube Movies, and Vudu. It may also be available for rental or purchase on other streaming services or through online retailers. Additionally, the film may be available for viewing on certain cable or satellite TV channels that feature classic or horror movies. **

The Columbine massacre occurred on April 20, 1999, when two high school students, Eric Harris and Dylan Klebold, carried out a planned attack at Columbine High School in Colorado. The motives behind the massacre are complex and multifaceted, but some contributing factors include the perpetrators' feelings of alienation and rejection, a desire for revenge against perceived bullies, access to firearms, and exposure to violent media. Additionally, mental health issues and a lack of intervention or support from adults may have played a role in the tragedy. **

Massacres can occur for a variety of reasons, including political, religious, ethnic, or social conflicts. They may be fueled by hatred, revenge, or a desire for power and control. In some cases, massacres are carried out as a form of terrorism to instill fear and intimidate a population. Lack of empathy, dehumanization of the victims, and a breakdown of societal norms can also contribute to the occurrence of massacres. **