Those who advocate the acceptance and assimilation for the sake of cultural diversity, the hundreds of illegal immigrants who arrive here by whatever means year in and year out should re-think their position. They only delude themselves if they believe that this influx will not have an adverse effect on Maltese life as we know it, and tourism in particular. One needs only to visit some of the more popular tourist spots to our north. The Piazza del Duomo in Pisa, the Piazza di Trevi, or the area around Castel Sant' Angelo in Rome are daily overrun by groups of individuals who constantly harass tourists. Indeed, because of its relatively small size, in the Piazza di Trevi on a sunny day last April, hapless tourists appeared to be outnumbered three to one. Curiously enough, tourist harassment was non-existent in St Peter's Square. One has to wonder what the Vatican Police know that Rome's Carabinieri do not.