The band returned to the US for a second visit on 18 August 1964, this time remaining for a month-long tour. The Beatles performed 30 concerts in 23 cities, starting in California and ending in New York. One of the major stipulations was that the band would not perform for segregated audiences or at venues which excluded blacks. The tour was characterised by intense levels of hysteria and high-pitched screaming by female fans, both at concerts and during their travels. At each venue, the concert was treated as a major event by the local press and attended by 10,000 to 20,000 fans whose enthusiastic response produced sound levels that left the music only semi-audible.