Brewing giant Heineken and satnav maker TomTom have joined the global Facebook advertising boycott ? the first two high profile Dutch brands to do so. Hundreds of firms have pulled their Facebook advertising because of the social media platform?s perceived reluctance to get tough on racism and hate speech. Heineken told broadcaster NOS it is concerned about the ?damaging content on social media? while TomTom said it was making the move as a response to debate about the way social…