The number of user-generated posts is growing exponentially with social media usage growth. Promoting violence against or having the primary purpose of inciting hatred against individuals or groups based on specific attributes via social media posts is daunting. As the posts are published in multiple languages with different forms of multimedia, social media finds it challenging to moderate before reaching the audience and assessing the posts as hate speech becomes sophisticated due to subjectivity. Social media platforms lack contextual and linguistic expertise and social and cultural insights to identify hate speech accurately. Research is being carried out to detect hate speech on social media content in English using machine learning algorithms, etc., using different crowdsourcing platforms. However, these platforms' workers are unavailable from countries such as Sri Lanka. The lack of a workforce with the necessary skill set and annotation schemes symbolizes further research essentiality in low-resource language annotation. This research proposes a suitable crowdsourcing approach to label and annotates social media content to generate corpora with words and phrases to identify hate speech using machine learning algorithms in Sri Lanka. This paper summarizes the annotated Facebook posts, comments, and replies to comments from public Sri Lankan Facebook user profiles, pages and groups of 52,646 instances, unlabeled tweets based on 996 Twitter search keywords of 45,000 instances of YouTube Videos of 45,000 instances using the proposed annotation scheme. 9%, 21% and 14% of Facebook, Twitter and YouTube posts were identified as containing hate content. In addition, the posts were categorized as offensive and nonoffensive, and hate targets and corpus associated with hate targets focusing on an individual or group were identified and presented in this paper. The proposed annotation scheme could be extended to other low-resource languages to identify the hate speech corpora. With the use of a well-implemented crowdsourcing platform with the proposed novel annotation scheme, it will be possible to find more subtle patterns with human judgment and filtering and take preventive measures to create a better cyberspace.
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