By Joseph Gamp Six people have been arrested after pro-Palestine protesters took to the streets of London, calling for an immediate ceasefire in Gaza. Around 1,700 police officers patrolled the capital on Saturday. The protest, part of a global day of action involving 30 countries, came after the UK and US carried out air strikes against Houthi bases in Yemen. Several protesters made references to the military action, with one man holding a placard claiming the UK and US “want war” and that Yemen “supports Palestine”, while one speaker told crowds at Parliament Square that RAF planes were “fly…