This paper studies how a politician’s preferences and abilities to influence public and private sector productivity affect her choices over economic policies. Extremism between policies of leftand right-wing incumbents increases with ability, because voters are more willing to re-elect competent politicians. Positive correlations between certain ability dimensions and preferences amplify politi...

Twitter is the largest and most popular micro-blogging website on Internet. Due to low publication barrier, anonymity and wide penetration, Twitter has become an easy target or platform for extremists to disseminate their ideologies and opinions by posting hate and extremism promoting tweets. Millions of tweets are posted on Twitter everyday and it is practically impossible for Twitter moderato...