Is there any way to push out those people that come here only to say bad words, offending parents, injuiring againts race/religion & so on?

Everyday there's someone acting like this... I just got my daily words from two people I've never seen that has started to offend me and my mother only because I'm italian.

Here is the trace (I could understand only italian words...)

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Otac: poslali su mi poruku iz neke agencije za dosta destinacija
Shexy Pete has left
benayoun: ali ako on bude svima predlagao da idu, onda ce nas biti pun kurac
ibra has left
Otac: trebamo se samo dogovorit
STEV007 has left
kingjay has left
Otac: to je bolje sto vise
iterums2 has left
benayoun: i svi bi isli u taj za 1250 kuna?
Otac: samo da se ne sjebemo za smjestaj...jer ovi jeftiniji su kurac vjeruj mi
benayoun: jarabe71...ciao topo di fogna
pudly is here
kingjay is here
pudly has left
kingjay has left
kingjay is here
Otac: pa mislim da je sve jedno...ista agencija nudi vise hotela
kingjay has left
jarabe71: allora? Giochiamo?
Otac: onaj ko oce jeftiniji neka ide sta
kingjay is here
benayoun: ja mislim da ce ih ici oko 15-tak.
Otac: che cazzo vuoi brutto pezzo di merda
Dean24 is here
Otac: italiano del cazzo
jarabe71: are u talkin wit me otac?
hometownkid has left
Otac: pusi kurac majmune
Je$t is here
benayoun has left
jarabe71: parli con me caro Otac?
Je$t has left
Otac: no con tua madre
jarabe71: bene, volevo solo questa conferma... Mi spiace ma giocherai ancora per poco a questo gioco
Dean24: jarabe, mi sono scopato tua madre quando era ancora vergine, e poi sei nato tu...
Tuny is here
Tuny has left
betterhanthanu is here
betterhanthanu has left
Otac: imam dva pata
hessus_ is here
JennieWren is here
Dean24: bruto pezzo di merda, tua madre si scopava tutto il regno unito!!!
Dean24: kralj i dama
hessus_ has left
syturvy is here
mark07 is here