SOFIA - More than 160 people were arrested in Bulgaria after hundreds rallied across major cities for a second straight night following clashes between a Roma clan leader and his fellow villagers, police said on Wednesday.Some 2,200 people took part in the second night of demonstrations, the police said in a statement.The protests have been provoked by the worst outbreak of unrest for years in the European Union's poorest country.Hundreds of young people, frustrated over the lack of opportunities in a weak economic recovery and what many describe as a climate of impunity for organized criminals, took to the streets in 14 towns."A total of 168 have been arrested for violation of public order, the majority - for possession of small bombs, knives, bats, pipes from vacuum cleaners, kitchen meat hammers," the Interior Ministry press office said in a statement.