Complex sentence: Wilders is best known for his criticism of Islam; his views have made him a controversial figure in the Netherlands and abroad, and since 2004 he receives permanent personal protection by armed bodyguards.
Split into simpler sentences: Wilders is best known for his criticism of Islam. Wilders' views regarding Islam have made him a controversial figure in the Netherlands and abroad, and since 2004 he receives permanent personal protection by armed bodyguards.