ms hanson slammed imposing halal certification on australians .
she described the move as a ` profit , money-making racket '
one nation leader denied that any clashes took place at rally in brisbane .
` criticism is not racism . we have a right to have a say , ' she says .
protesters clashed with anti-racist activists in sydney and melbourne .
twitter account claimed to be linked with group behind anti-islam protests .
originally believed reclaim australia gave control of feed to a supporter .
however , ` jeremy ' began to tweet jokes as the protest in sydney started .
thousands attend reclaim australia rallies across the country .