July 4th beach parties nearly turned into a brawl when papparazi invaded the precious Malibu sand . Polaroid sponsored a huge house party and homeowners next door (Rick Solomon and Dean Factor) had open house parties also. Celebrities trekked from house to house with cold drinks and in between swam and sunbathed. Photographers gathered in large numbers on the beach and started long lensing inside the houses. Irate bodyguards threatened to chase them away but snappers stood their ground insisting beaches are public. Both sides started throwing sand and water at each other. Lindsay Lohan was sunning herself on the sand and noting the flying objects around her, muttered “I give up -I’m going inside” and rolled up her towel. Jeremy Piven was amused by the fracas and stayed to observe. There were no casualties.